Sierra

Sierra, labeled The Obsessive Uber-Fan, is one of three newcomers, and was one of the contesants Total Drama World Tour. She was originally a member of Team Chris Is Really Really Really Really Hot, before trading with Izzy who was on Team Amazon. She was on Team Amazon and made it to the merge, and final four, until being eliminated.

Total Drama Action
Sierra, along with Alejandro, makes her debut in Celebrity Manhunt's Total Drama Action Reunion Special, where she flaunts her knowledge of the Total Drama series. She created a blog for each and every cast member of the series and has been shown following them around. She is briefly seen during the report about Bridgette and Geoff's relationship problems, where she is seen excitedly getting her stomach signed by Geoff. Her cover is blown by Izzy in an interview, who reveals that she has been feeding Sierra this information so that she could get the RCMP off her back. Sierra gets a small job interviewing the cast on the red carpet, but Blaineley thought her questions were boring. Sierra was the one to encourage the contestants that they are not has-beens and tells them to stop Chris from doing Total Drama Dirtbags. She ends the show saying she is a third-generation Chris McLean scholar and can tell whether he is lying or not by his vocal tone and body language. She also knows where Chris shops for his clothing and the name of his three dogs. With an interest to finally answer all the blog questions on Cody, she wonders about things like the type of deodorant he uses and what song he sings in the shower, mentioning that the final question will be a "six-month analysis." However, Sierra ends up making the camera run out of battery with her long confessional.

Total Drama World Tour
In Walk Like An Egyptian - Part 1, Sierra is the last person to exit the bus, running out and exclaiming that it's her "best day ever." Sierra then notices Cody and rushes over to know him better, but is quickly Interrupted by Chris. Inside the Total Drama Jumbo Jet, while Chris is explaining the rules of the competition, Sierra is shown to be one of the only people to be listening. Heather expresses interest in starting an alliance with Sierra in this episode. While waiting to arrive in Egypt, Sierra states Cody's full name and reveals that he was born on April 1st. Sierra then attempts to flirt with Cody, saying that Cody is her own April Fool. During the Come Fly With Us musical number, Sierra sings with Cody. In the "Pyramid Over Under" challenge, Sierra forms a team with Heather and Cody, going under the pyramid. In the pyramid, Sierra almost injures Heather and herself by stepping on a loose step and making arrows shoot out of the wall. The trio later runs into Izzy, dressed up as a mummy. Sierra is later put into "Team Two". While deciding on the team name, Sierra shows some attraction towards Chris, naming her team "Team Chris Is Really Really Really Really Hot".

In Walk Like An Egyptian - Part 2, Sierra tells Izzy that Duncan and Courtney their fans will be disappointed on her blogs, but she and Owen have a chance of becoming the new Total Drama power couple. Then, Sierra tells Izzy that Cody is hotter than Owen and he still sleeps with a stuffed emu. Sierra then rants about how Alejandro is not hot and sees the other girls as crazy for liking him. She goes through with Alejandro's plan on the goat. When she reaches the Nile, she tells everyone she's a fourth generation basket weaver which she is quick to build half of Teams Chris Is Really Really Really Really Hot's raft. Then, she and Izzy switches teams due to her wanting to be close to Cody. She then quickly builds Team Amazon's raft and manage to get help try to get the camel on. Once Team Amazon get's their camel onto their raft, they proceed to go across the Nile. Sierra and the rest of Team Amazon are the first to cross the finish line with the item they are supposed to bring, thereby escaping elimination.

Sierra is seen in Super Happy Crazy Fun Time Japan sniffing Cody's shoe, which the shoelace ends up getting stuck up her nose after Heather mentions her as a "friend". When Chris sends all of the contestants out of the plane, they sing Before We Die where Sierra mentions she wants to marry Cody. Cody participates in the human pinball challenge and Sierra is in it with him, rather than pandas for the other two teams. In the pinball, she kisses him all over his face. She says that if they got a point for every time she kissed him, they would be millionaires. Then in the second challenge, after Heather, Gwen, and Courtney fight, she and Cody created "Huh?" as their commercial, which ends up winning the challenge for Team Amazon. She proceeds to have a "group hug" with her team, but only hugs Cody and proceeds to block the rest of her team from the hug.

In the beginning of Anything Yukon Do, I Can Do Better, Sierra is seen with Cody in the winner's lounge, massaging his feet. After waking up from a peaceful sleep, Cody tells her that he doesn't like his feet touched, but Sierra proceeds to jab him in a pressure point, which temporarily paralyzes Cody. Sierra then listens in onto Chris in the commercial class area, and explains in the confessional that after viewing, reviewing and re-reviewing season one and season two, that when Chris says one thing, he means another. When everyone lands out of the plane and is together, Courtney mentions huddling together for warmth, where she grabs Cody and happily embraces him after Gwen rejects him. Then, when Chris explains the challenge in Yukon while drinking cocoa, she mentions that cocoa is Chris's second favorite drink, his first being tomato juice. When Chris asked how she knew this, Sierra explains she interviewed his school for a unauthorized biography. During the challenge, Sierra is seen saving Cody and Owen by throwing a ice block at a polar bear when it is about to eat them. She then uses a trout to paddle to Cody to rescue him after Owen pees in the water. When Sierra saves Cody, she realizes he needs warmth and needs to be on land, which then, she throws him back to shore, but unwittingly making him hit a rock, too. She then follows him using his footprints and both are rescued by Courtney, Gwen, and Heather. Suddenly, she and the rest of Team Amazon are singing back up to Stuck to a Pole, due to Chris' commands. She is seen last losing with her team to Team Chris Is Really Really Really Really Hot and Team Victory, when suddenly, Chris announces Team Amazon is in second place due to Bridgette not being with Team Victory and Team Chris Is Really Really Really Really Hot placing first place.

In Broadway, Baby!, Sierra is seen with Cody, warming his feet up from last episode in the economy class section of the plane. Heather then comes over to Sierra and Cody trying to have them as "friends" and said she values their friendship. Sierra then says that she values their friendship too and requests a hug, which Heather promptly denies. Alejandro then comes up to her and offers her smuggled treats from first class, which Sierra says no and calls him an enemy. When they then arrived in New York, Sierra talks to Chris about his sadistic ways and how she loves the terrible movies he did about cats, which Chris then thanks Sierra and pushes her away. Sierra then is picked to help the team to climb up by Heather. Sierra then is last to climb up under Cody can calls it the best view in New York, and in response, Cody covers his butt. While climbing, Alejandro tells Sierra that she help Chris revisit his glory days cause he thinks no one cares about him anymore. Sierra then brings up that Chris was on a cooking show and his white rice recipe was delicious, when her team finishes the first part of the challenge. While on the boat, Sierra tells Courtney to turn around because Cody fell off the boat. When after grabbing Cody, Sierra and her team get eaten by a alligator in the sewers, who then spits them to the dock. Sierra then informs everyone that Chris was in a boy band and has an obituary ready for him, where Chris snaps and tells her to zip it. Sierra tries to comment on Chris when he answers Owen, only to be yelled at by Chris again. Sierra then retrieves the apple for her team last, but her team comes in first. Heather tells Sierra not to talk to Chris for a while. When opening their rewards for winning, Sierra opens an apple, which contained many small apples.

Sierra was talking to Heather in Slap Slap Revolution about who is going home next. Sierra believes that someone from Team Chris is Really Really Really Really Hot will go home due to statistics and overconfidence. She later checks on Cody while he is sleeping and lets him suck her thumb. She uses some of her team's sausage in order to build a model of Cody but loses it on the mountain. She reveals that she is a really good slap dancer and does a dance which proclaims her love for Cody, through song. She wins the challenge for Team Amazon due to Alejandro being distracted by LeShawna slapping Heather. Sierra then slap dances to Alejandro, making him fall off the platform. She is excited that she has won the challenge for her team.

In The Am-AH-Zon Race, Sierra told Gwen that she was on the Internet. She was actually staring at a pizza box with a drawing of a computer desktop (a picture of a buff Cody holding her in his arms), and using a real mouse as a computer mouse. Later, she pointed out that Gwen's prediction of good luck for Team Amazon in the Amazon would bring bad luck to them instead. Later, when Cody revealed that going through the jungle would require him to bring his medication to avoid allergies, Sierra begged to be the one who would carry the needle and inject him if necessary. Instead, Cody managed to convince Gwen to do it, much to Sierra's chagrin, due to her knowing all of Cody's allergies. She and the rest of the team were captured by the Zing-Zings and held hostage, thus losing the challenge for them and forcing them to face elimination for the first time. Sierra initially seemed to be angry at Gwen due to her jinxing the team, but she ultimately agreed to join votes with Courtney and Gwen to vote out Heather. Chris, instead, reveals the votes on a monitor rather than handing out Barf Bags. Through this, it is confirmed that Sierra did, in fact, vote for Heather, as did Courtney and Gwen. And when Sierra voted, she said that voting Heather off is something that she always wanted to do (and even pretended to do so at her house) in the confessional. Cody was revealed to have voted for Sierra due to her being such a stalker, which devastated Sierra and thus left her crying and confused for the rest of the episode. In Can't Help Falling in Louvre, Sierra is first seen crying, while eating straight out of a gallon of ice cream due to Cody voting for her last episode. Heather drags her out of the room because of Alejandro pointing that she is easily upset about a boy. When at the Louvre, Sierra is seen with her team running from the bear. Throughout the episode, Sierra constantly cries, first crying when the bear was about to attack them, which reminded the bear about his ex-girlfriend. Cody constantly tries to cheer her up, which fails. Chris then comes by to tell them to sing, which is when Sierra volunteers to sing Paris. She focuses her song on how Cody broke her heart, and finishes by singing that she wants to go outside. Cody then takes her out for a romantic dinner, which doesn't work. She doesn't gets impressed since she knows that he isn't doing this because he wants to. Cody finally snaps at her, telling her that she isn't acting like her usual self, and that he actually missed it. Sierra finally forgives him. Later in the confessional, she reveals that she wasn't that mad at Cody and that she liked him paying attention for once. She tells that she was playing hard to get, and that it really works.

In Newf Kids on the Rock, Sierra happily brushes her teeth with Cody's toothbrush when Heather finds it. She told Heather she has been looking for it, as Cody told Heather it was his ninth and final tooth brush. Sierra is pushed out with everyone else. She tells everyone they're in Newfoundland, Chris's homeland. She helps paddle the boat for Team Amazon with Cody. After Gwen and Courtney climb down from the rock they thought they saw Duncan on, she tells everyone about a dream that Cody was riding a white horse outside her window. This freaks out her team. She and the rest of the team arrive, and then find out they lost.

In Jamaica Me Sweat Sierra is seen with her team mates in the loser's cabin. She was sitting next to Cody just watching Heather and Courtney complaining about having lost the last challenge. As the plane was falling, she screamed and hugged Cody, but they luckily landed in Jamaica. During the first challenge, she cheered for Cody to show "who is the boss?" to the shark he ended up having problems with. Sierra also participated of the challenge and when she jumped in the water she threw water everywhere, which ended up putting an electric eel in Courtney's head, electrocuting her, and later Gwen when she tried to help Courtney. She didn't find the treasure, but Gwen later found it and Heather took it to Chris, winning for them the challenge, which made Sierra happy. Sierra was excited to have Cody bobsledding with her in the second challenge. She expressed how this sport was really cosy, while hugging him. They did well in the two times they did the course, but they ended up smashing into the pool's wall getting injured a bit. They didn't win, but did better than DJ, so they didn't go up for elimination, but she was disappointed along with her team mates, about losing the winner's cabin again.

At the beginning of I See London..., Sierra is seen typing on her pizza box laptop, mimicking writing a blog. She gets mad at Noah for making fun of her. When they finally reach London she is seen holding hands with Cody and saying that Queen Mary II got married when she was just 15, scaring Cody and making him ask for her to release his hand. Sierra gladly volunteers to strip clothes off of a tower guard in order to find a hidden clue, only because Gwen tapes a mask of Cody's face over the guard's face. Then, she is seen in a hallway with Cody, trying to get him to kiss her, just before Jack the Ripper kidnaps them.

Sierra gets annoyed with everyone in Greece's Pieces because nobody takes Cody seriously. When Chris asked the contestants where the Olympics where, Sierra answered Atlantis. She was chosen to do the fight challenge but ended up fighting Courtney due to Courtney calling Cody weak. She loved that Cody was wearing a Greek costume and said he looked like an angel. She did not want him to win the challenge so she could vote off Gwen who is he object of Cody's affection. When they won Sierra gushed over how awesome it ways that Cody punched Duncan.

Sierra was making a paper doll of Gwen in The Ex-Files then bites off its head out of anger. Sierra reveals in the confessional that she knew Gwen and Duncan liked each other but believes boyfriend stealing is wrong. When trying to sneak into Area 51, she jumps on top of Cody's shoulders when in the mine field. Once inside, she sees a cloned version of Cody approaching the real Cody, this excites Sierra who then hugs them both, which causes the clone to explode, confusing Sierra.

In Picnic at Hanging Rock, Sierra hugs Cody in fear during the bungee-jumping challenge. When she realizes her team is struggling, she gets excited and jumps off the cliff without an ankle harness shouting, "This one's for you, Cody!" She also cries at the elimination ceremony when Cody votes for her again.

Sierra is shown to be in a good mood in Sweden Sour. She explains that she is happy that Gwen is gone and that Cody can finally see that she is his true love. She gets frustrated at Heather when she constantly asked if there was gum on her shorts. Once in Sweden, she convinces Courtney to let Cody build whatever they were building. Once he finished, she was annoyed that it was a model of Gwen's head. On the boat ride, she tries to cheer up Cody with a vision of her happy place. It is a mountain view of Codys, some large, some small, and some covered in chocolate marshmallows, which causes the real Cody to vomit. She nominates Cody as captain and even takes a cannonball to the gut so he wouldn't get hit. She voted for Courtney in the fake elimination ceremony.

In Niagra Brawls, Sierra is dropped from the plane while asleep with the rest of the cast. She manages to get into a swan boat with Courtney and Owen, only to discover they are heading for a waterfall. When Cody says if they live, he'll let Sierra kiss him, she instantly uses Owen as a grapple and pulls both boats to the shore. When it comes time for the second part of the challenge, she plays the lottery for her "husband." She is heartbroken when she winds Alejandro and cries for another shot (which she is given later after Heather takes Alejandro). Sierra ultimately winds up with Cody (who is less than thrilled to be paired with her). During the second challenge, Cody purposely slacks on giving Sierra the directions to her wedding dress, but when she hears Chris saying how the others have got theirs, she blows through all the obstacles to reach the dress. During the final part of the challenge, Sierra winds up being the one carrying Cody across Niagra Falls. She reveals she has learned a wedding ceremony and is an ordain minister meaning she is legally allowed to marry people. She tries to get Cody to say "I do" (but to no avail). Though the two reach the end, they are sent back due to Sierra failing to declare "insane" status. She winds up getting in a fight with Blaineley (upset that Blaineley upset Cody) and kicked Owen in the leg that caused all of them to fall into the water in result (narrowly escaping the sharks). Later back on the plane, she does manage to get Cody to say I do and believes she's now married to him. Alejandro promises her that he will be the official witness provided she joins him in voting off Owen. His plan works and Owen is eliminated.

In Chinese Fake Out, Sierra was still trying to help Cody out with the competition after she got "married" to him. On the Great Wall challenge, she used the pogo stick to get across, but then Ace knocked her off onto someones house. Later, the Chinese women tells Sierra to take some of her love-me tea. During Chris's lunch challenge, she didn't exactly eat anything, she just drunk her tea. In A Chinese Lesson, Sierra didn't sing, she just keep drinking her tea. At the end, however, she and Cody share time in first class together, and the love-me tea makes Cody sick, and Sierra shoots him with the epipen. When Blaineley gets voted off she tells Sierra that Cody's been voting for her very time. Of course, she just keeps drinking her tea.

In African Lying Society, Sierra gives Cody some of her love-me-tea, which causes him to become indisposed. Sierra carries a comatose Cody in her backpack throughout the whole episode and tells Chris she'll play for both herself and Cody. In the soccer challenge, she accidentally used Cody to block the soccer balls. The two failed to complete the challenge and were given goggles and two tranquilizer balls total. Sierra is shown to be good at crafts as she built her own slingshot. Sierra hits a rhino with a rock. Frightened, she runs away at high speed, only to launch Cody into a tall tree. She, along with Heather, chase after a baboon that has kidnapped Cody. She and Heather accidentally tranquilize Duncan and Alejandro, only to be tranquilized themselves. Later, she finds Cody and saves him from the baboon that had taken a liking to him.

In Rapa-phooey!, Sierra is depressed that Cody is in first-class with Alejandro and she isn't there with him. Once off the plane, Sierra is ecstatic to see Cody while he's gorging on candy and says he looks a little taller in the time they've been apart. Sierra states that she would never join any alliance, because she knows how they always end, but the only one she's willing to join is one with excusively Cody.During the egg challenge, Sierra finds an colored egg of Alejandro's. When he's thanking her she drops the egg (on purpose), since she's jealous that he took Cody away. Though when she finds a colored egg of Cody's she's more than happy to give it to him to help him. Sierra isn't thrilled that Alejandro's eggs are bunched in with Cody's. Sierra tries to warn Cody of Alejandro, but he baits him away with candy. While Heather is holding one of Sierra's eggs, it proceeds to hatch and Sierra names it Cody Jr. Though the bird seems to take a liking to the top of Heather's head, which Sierra doesn't like. During the second part of the challenge, Sierra climbs up the condor nest during the song but fails the challenge. At the elimination ceremony, Sierra is voted out and this makes her sad making her hug Cody, but it turns out to be another reward challenge. Sierra reveals that she will not make any alliances as they never last according to her research but she will trust Cody.

In Awww, Drumheller, Sierra has Cody sleeping on her lap and then running around in order to prepare for a surprise. Alejandro shows her a picture of Cody and Heather sleeping next to each other which causes her to be hurt and angry. She builds a dinosaur with glitter glue and wins. She also reveals that she remembers Cody's birthday. When voting, Sierra picks Heather's dinosaur named after Chris, which Sierra knows is an ass-kissing attempt from her, but she likes it because she and her mother did one at home. She wins a drill and continues to be mad until Cody pointed out the photo was fake. Realizing it was Alejandro who showed her the photograph, she warns Cody and goes to find Heather. She is the first to find a barrel and despite offering it to Cody, wins immunity. She turns down a barbecue with Chris in order to bake a cake in the plane's kitchen. She interrupts Heather's confessional in order to warn her of Alejandro's trick. She is excited that the elimination ceremony is like the one during first season and eats her marshmallow happily, saying that she used to do it all the time at her house. Before it was announced who would go home, Sierra goes to get Cody's birthday cake, topped with lit sparklers. One of the barrels had leaked oil around the base of the plane, so a spark from the sparklers ignites the oil barrels and explodes the plane. Caught in the explosion, all of her hair gets burned off. Chris finally losses his temper and declares that Sierra would go home even though she had invincibility. Sierra wants Cody to win since her elimination.

In Planes, Trains, Hot Air Mobiles, Cody is digging Sierra out of the plane's wreckage. It seems Sierra is severely injured in the explosion, although not needing immediate medical attention. Heather, sympathizing with Sierra that she is bald on national TV, finds a wheelchair in the wreckage and a headdress from Rapa-phooey! to cover her baldness. Chris leaves in a two-seater helicopter, and tells the injured Sierra to find her own way home. This finally breaks her crush on Chris, and requests that her mom back home disassemble their shrine back home. She spends most of the episode encouraging Cody to finish the race, giving him her wheelchair for his hot air balloon and giving him the final push when the balloon crashes. She also reveals that the locket she has worn all season contains a picture of Cody inside. She drives the boat for Cody as he battles with Alejandro. The boat makes it safely to Hawaii, but Alejandro's boat crashes into it, causing both Alejandro and Cody to crash onto the beach at the same time; Sierra was thrown from the boat at the same time.

In Hawaiian Punch, Sierra is vocally cheering for Cody, and later rescues him from the shark-infested waters when he falls in.

Trivia

 * Sierra's background is possibly German as she mentioned her grandparents were from Germany.
 * Sierra, along with Ezekiel and Alejandro, are one of the few contestants to use the confessional in a season that they did not participate in.
 * Sierra is currently the tallest female on the show, surpassing Heather, and the third tallest character overall (the first two being DJ and Geoff).
 * Sierra is the first and only contestant to make the camera in the confessional run out of battery.
 * Sierra is one of the two new coming contestants in Total Drama World Tour, the other being Alejandro.
 * Coincidentally, they both have dark skin, earrings and necklaces, wear belts, and both of their names are of Hispanic origin. Alejandro's meaning "Alexander" and Sierra's meaning "hacksaw" or "chain of mountains".
 * Sierra's favorite cast member is Cody, hence him being her crush.
 * Sierra is the first person Heather has tried to manipulate into an alliance with her in Total Drama World Tour.
 * In Broadway, Baby, she revealed that she is only letting Heather think she is manipulating her.
 * Sierra is the first contestant to use 'text slang' in Total Drama World Tour.
 * Sierra claims to be a "xth generation" of various things.
 * Sierra claims to be a third generation Chris McLean scholar (Celebrity Manhunt's Total Drama Action Reunion Special).
 * Sierra is a fourth generation basket weaver (Walk Like An Egyptian - Part 2).
 * Sierra is a tenth generation slap dancer (Slap Slap Revolution).
 * Sierra is the second character in the Total Drama series to switch teams with Izzy, the first being Katie.
 * Sierra is one of five people to have dyed their hair. The others being Gwen, Lindsay, Duncan, and Blaineley.
 * Sierra seems to have a general knowledge of French, using a little during the song Paris.
 * Sierra is the only girl on Team Amazon not to have been kissed by Duncan.
 * Sierra had the longest hair out of all the Total Drama characters thus far.
 * Sierra is the second contestant to be eliminated in a challenge she won in. In this case it was in Awww, Drumheller. The first was DJ.
 * She is also the only contestant to be eliminated despite earning immunity.
 * She is the second contestant to become bald, the other being Heather. The other nearly-bald contestants are Ezekiel who is not fully bald yet, and Alejandro who has little hair remaining on his head after being completely covered by lava in Hawaiian Punch.
 * Sierra is also the second contestant to become bald during her elimination.
 * However, since Ezekiel fell in the lava in the finale, it is most likely that the rest of his hair was burned off.
 * Also Sierra and Alejandro are two newcomers.
 * Sierra is the third Total Drama contestant to be kicked out by Chris without being voted off. The first was Owen in Top Dog and the second was Ezekiel in Walk Like An Egyptian - Part 1.
 * Sierra is one of the only contestants in the third season to not be eliminated by Alejandro; the others were Ezekiel, Lindsay, Gwen and Izzy.
 * Sierra is the only contestant to use the confessional in a season that she competed in after being eliminated.
 * Sierra is the second contestant to stay with the show despite being eliminated. The first was Ezekiel.
 * Sierra's necklace is a locket that has a picture of Cody in it.
 * Sierra is the only character in the series to get married(though unofficially)
 * Sierra reveals she plays an online game.