Duncan and Heather

The Heather-Duncan Conflict is about the minor conflict, possible friendship between Duncan and Heather.

Not So Happy Campers - Part 1
Heather immediately begins to be annoyed by Duncan, who hits on her right after he arrives in the first episode. In fact, Heather's first words in the series is her response to Duncan's flirting saying, "Drop dead, you skeeze." Soon after that, when Heather gets impatient with the attention being given to Bridgette, Duncan teases her by stating that she "missed her double cappuccino macchiato" that morning, to which Heather responds with a simple "get bent." Later, Heather shows disgust when Duncan requests a bunk under her, which he seems to be doing just to irritate her.

No Pain, No Game
Duncan mistakenly accused Heather of voting Courtney off, not knowing the real culprit behind Courtney's elimination. For this reason, Duncan did not vote Eva off and instead voted for Heather.

Search and Do Not Destroy
Duncan was informed by LeShawna about Trent kissing Heather, and agrees to either vote off Trent or Heather. He seems to be upset about it, despite not having a very strong relationship with Gwen or Trent at this point in the show. Although he remarks that Trent "messed up", he seems to be equally upset with Heather.

That's Off the Chain!
Duncan was disgusted when Heather abandoned Lindsay, remarking that what she did was "cold". Heather then said that Duncan was being hypocritical, as he always goes around scaring the crap out of everybody. Offended, Duncan said that at least he was straight with people, implying that he didn't agree with Heather's habit to constantly lie (as a result of Heather's snobbery).

Hook, Line, and Screamer
Duncan took offense when Heather insulted Duncan's and Gwen's enjoyment of horror movies. He replies saying there is lots in them besides "mindless guts and gore". She also remarks that Gwen and Duncan have more in common than "bad fashion sense".

Wawanakwa Gone Wild!
Heather called Duncan a "criminal" while in the confessional, telling the viewing world that she's the favorite to win the $100,000. Later, Duncan considered joining Heather's Alliance, a win-win situation, stating that even if it failed, he would not care. He seems not to have any fear that Heather might be eaten by a bear. Duncan is also seen laughing in the confessional after Heather is shot with Izzy's tranquilizer gun. At the end of this episode, Heather forced Duncan to clean the communal bathrooms for her.

Camp Castaways
Duncan refers to both Heather and Gwen as "insane" and "annoying" and also remarks "which one would you trust?". Also, when Heather says that both Duncan and Gwen are crazy, Duncan retaliates by saying, "You say that like you aren't crazy." Duncan also comments that she "changes friends more often than he changes socks", to which Heather mentions that he doesn't change his socks often enough.

Are We There Yeti?
Heather convinced Gwen to help her trick Duncan and Owen into thinking they need help camping over the night, in an effort to steal all of their supplies. The effort worked, and Duncan and Owen were angry with both Gwen and Heather for tricking them. Also, when Duncan is walking the Dock of Shame, Heather insults him, although Duncan ignores her.

Riot On Set
Duncan began to complain about the script he has to memorize, but Heather replies that he is being a "Prima Donna" and that he should "just stand there and look pretty" and adds, "okay, Pretty Boy?" Duncan then threatens her until Gwen intervenes.

The Chefshank Redemption
When LeShawna stated that she trusts anyone more than Heather, Duncan agrees and tells Heather to shut it.

The Sand Witch Project
Chris forced Duncan and Heather to kiss in this episode during the horror film challenge, which neither of the two enjoyed. Heather said that Duncan "tasted like street", while Duncan was seen gagging afterwords. This suggests that he no longer has any physical attraction for her like he did in the first season.

Masters of Disasters
When Heather was scared about how they would escape the submarine, she automatically grabs on to Duncan, and then, realizing what she has done, she splashes him away with a disgusted look on her face. Duncan was at first confused, but then smirked at her mistake.

Ocean's Eight - Or Nine
Although there were several hints of friendship, the episode was mostly featured on Harold, Heather, and Duncan not getting along, and there were many instances that showed this. At the beginning of the episode, Heather called Duncan a vandal. She also called him "idiot boy" due to him telling LeShawna not to hit the door on her big butt, and they were in a tent. He called her a dweeb in the confessional, and called her a loser to her face. Also, she remarked that she'd "seen manlier men trying on woman's shoes" when he acted nervous in the presence of Courtney.

Million Dollar Babies
When Heather said they should cheer for her, Duncan said he'd rather cheer for his school principal, his mother, or even LeShawna. Duncan (along with Harold) also votes Heather off in this episode because even though he was angered by LeShawna when she made some rude comments about him (and all of the contestants) on Courtney's PDA, he immediately forgives her when she performed a cheer apologizing to all of the contestants.

The Aftermath: IV
When Heather is chosen to ask Beth and Duncan a question, she says that she doesn't have a question, and rants about how she should have been in the final two instead of them.

Walk Like An Egyptian - Part 1
When Heather states that her hair extensions are made from real hair, Duncan rudely comments that she learns something new every day. This may refer back to Gwen's comment on Heather's ponytail being made of pony hair.

Picnic at Hanging Dork
After seeing Alejandro flirting with Courtney, Heather takes revenge by flirting with Duncan. However, Duncan keeps ignoring her since he is dating Gwen, but Heather still got to disturb Alejandro. When Gwen asks Duncan whats up with Heather, he replies with "I dont know, probably plotting to kill me". Before Gwen could ask, Heather quickly denies planning something on Duncan.

Sweden Sour
While in Sweden, Heather attempts to hug Duncan to make Alejandro jealous, but Duncan refuses due to disliking her. They get into a brief fight, with Heather pulling at Duncan's hair and Duncan trying to shove her off him over this issue until they are interrupted by Chris.

African Lying Safari
Heather, along with Alejandro, most likely were the two players to vote Duncan off.

Planes, Trains, and Hot Air Mobiles
Duncan looked a bit mad that Heather made it to the finish line first when she secured a spot into the final two.

Episodes Against
When the two are not fighting, they seem to be hinting at a possible friendship or even a possible relationship.

Not So Happy Campers - Part 1
Duncan is physically attracted to Heather, which is proven when he hits on her a couple of times. The first time is when he had just arrived at the island and says to her, "See you at the campfire, gorgeous", to which she replies, "Drop dead, you skeeze". The second time is when Chris McLean is explaining the sleeping arrangements, Duncan requests a bunk under Heather. She then asks if the cabins are co-ed, which to her relief they aren't.

Hide and Be Sneaky
When the girls decided which guy to vote off after figuring out about their secret guy's alliance, Heather is vehemently against voting for Duncan, whom Gwen, LeShawna, and Bridgette were voting for. Instead, she decided Owen should be eliminated. This may have been because Heather doesn't agree with them, especially because Heather is rivals with the three campers.

Wawanakwa Gone Wild!
Duncan forms an alliance with Heather. The two have no problem being in a alliance together. Duncan only made the alliance, however, to get on Heather's good side and then betray her. He states in the confessional that he would be completely fine with Heather getting eaten by a bear. He does however assist her by giving her the deer outfit from Paintball Deer Hunter, which ultimately makes her a target for Izzy (who was hunting a deer).

Camp Castaways
Duncan states that Heather and Gwen are "hot" in the confessional, but then goes on to say that that they are both crazy and annoying.

Are We There Yeti?
Heather faked that she was too scared to go to sleep alone so she cuddled up to Duncan and asked him if she could sleep with him. He had no problem with her sleeping with him.

Masters of Disasters
Duncan and Heather were both mad at LeShawna when they found out that she faked her crying in One Flu Over the Cuckoos. Also, when Heather was scared about how they would escape the submarine, she automatically grabs on to Duncan, albeit inadvertently.

Ocean's Eight - Or Nine
Heather seems to have no trouble working with Duncan for a long point in time, and even calls him an "evil genius." They seemed to have gotten along due to their shared hatred for LeShawna. This was shown when Duncan said he didn't want her with them on the challenge and there was no need for cracking the safe to get her out, and Heather agreed. When Duncan crashed the get-away kart into a closet, Heather laughed with Duncan at Harold when Harold had a bra on his chest.

One Million Bucks, B.C.
Heather cheered Duncan on as he tried to make a fire in the first challenge. Her exact words were, "Go Duncan! Burn her!" Duncan also became considerably annoyed at LeShawna when she cheered Heather's loss in the second challenge.

Million Dollar Babies
Duncan cheered Heather on when she was playing a badminton match with Beth. His exact statement was, "That's right Heather, no mercy!"

The Aftermath: IV
After Duncan answers DJ's question, Heather is shown nodding approvingly in response, implying that she liked his answer. She also most likely voted for him due to her conflict against Beth.

Celebrity Manhunt's Total Drama Action Reunion Special
Heather is revealed to own a picture of Duncan. Why she owns it is unknown though it may have just been for her to use while making fun of Gwen.

Picnic at Hanging Dork
To get back at Alejandro for flirting with Courtney, Heather starts flirting with Duncan during the challenge, and she acts nicely to him.

Sweden Sour
Heather asks Duncan to help her stay warm, although it was mainly just to make Alejandro jealous.

Hawaiian Punch
Duncan cheers for Heather at the end and even compliments her for taking down "LaCucaracha".

Trivia

 * This was the first conflict to be formed in Total Drama Island.