Alejandro and Duncan

This article focuses on the interactions between Alejandro and Duncan.

Overview
At the beginning of Total Drama World Tour, the two have little interaction, due to Duncan being the first eliminated. The conflict really begins when Duncan returns in I See London.... Alejandro isn't very pleased to see Duncan back in the game, as he perceives him as a threat. Alejandro attempts to be friendly with Duncan, and the duo do seem to work well together with various problems, including attempting to eliminate Courtney to ruin Team Amazon from Picnic at Hanging Dork onward. However, after a conversation with Owen about Alejandro's true nature in Sweden Sour, Duncan reveals that he knows that Alejandro is a threat, never liked him in the first place, and is just playing along until he could try to eliminate him. Duncan and Alejandro do make an alliance in African Lying Safari to try to catch Ezekiel. However, in the end, Alejandro betrays Duncan to ally with Heather instead, causing his elimination.

Walk Like An Egyptian - Part 2
Alejandro calls Duncan a quitter when telling Courtney that she deserves to date someone better.

Greece's Pieces
During Greek Mix, Alejandro is seen spying on Duncan and Gwen. After discovering their secret ,Alejandro convince Tyler to reveal Duncan and Gwen kissing to the other contestants leading to a major drama between him and Courtney in the next episode.Alejandro, along with Tyler, votes Duncan off, and seems to get a bit angry when Chris tells them that Duncan is not eliminated, due to the personal removal of an intern instead.

The EX-Files
Alejandro is aware that Duncan is one of the strongest players of the show, so he plans to use Courtney against him. Later, Alejandro tells Duncan that he won't vote him off if Duncan saves him from the aliens. He follows through with this and votes off Tyler instead of Duncan. Duncan also says Alejandro is "alright" in the confessional after Alejandro hypnotizes Owen to make him sing "Take Me Out to the Ball Game."

Picnic at Hanging Dork
Duncan tells Alejandro to help him throw off Courtney's game by flirting with her, which will throw Heather's game off as well. This just builds more on their friendship, although Duncan did say if Alejandro failed, he would vote him off. However, Alejandro does not prevent or condone Duncan's method towards their victory in the episode: throwing a dingo at Cody to give them the time to find the sheep with their logo on it (Alejandro became more lenient towards taking the episode after Courtney advised him that she wanted Team Amazon to lose).Unfortunately, Duncan found out too late that this will cause Gwen's elimination which indeed happen. Additionally, Alejandro's plan also strains Duncan's relationship with Gwen.

Sweden Sour
Duncan confirms his thoughts about Alejandro after hearing about what Noah had revealed about him. Duncan then makes an alliance with Owen against Alejandro, and later explains in a confessional that he didn't trust him from the beginning. Duncan says that he plans to fake a friendship with him until he can vote him out. During the challenge, both of them compete against each other to gain Owen's trust. Later, Duncan mocks Alejandro's manner of speaking and Alejandro blames Duncan for their boat mast collapsing, while Duncan takes to the idea of talking like a Viking, Alejandro tells him to cut it out later.

Niagara Brawls
Alejandro chooses to continue to support Duncan during the challenge in this episode to keep his alliance, even to the point of rushing to help Courtney during the wedding dress relay stating that Alejandro needed her to survive to keep Duncan in the game (with every player split into couples for the episode's challenge: Duncan with Courtney and Alejandro with Heather). Furthermore, Alejandro specifically stated that his alliance with Duncan (as well as with Heather and Owen) were enough to keep him alive even if he lost a challenge.

Chinese Fake-Out
Duncan and Alejandro keep going neck-and-neck as the two race over on the Great Wall of China in order for one of them to win. They are close on making it, but are later disappointed when they discover that Blaineley had made it through before them. After Heather discovers Blaineley is cheating through the eating contests, Duncan also comments on Courtney helping Alejandro cheat. This causes both cheaters to lose and Sierra to win. Before voting someone off, Duncan inquires Alejandro about voting for Blaineley, instead of Heather.

African Lying Safari
Duncan and Alejandro team up for the challenge, but end up unconscious on the ground when Sierra and Heather hit them with tranquilizer balls. Then, Alejandro makes an alliance with Heather, which involves distracting Duncan so that they can win the challenge. Their plan prevails, and Alejandro tricks Duncan into getting attacked by Ezekiel. The plan succeeds, and as Ezekiel is hitting him Duncan calls for help from Alejandro; upon realizing that Alejandro wasn't going to assist him, Duncan understands the betrayal and scowls in indignation. At the Barf Bag Ceremony, it is revealed that Duncan had two votes that ultimately lead to his elimination, confirmed in the next episode to be from Heather and Alejandro. Its presumed Alejandro's plan involve using Duncan's guilt for causing Gwen's elimination as Heather mention the plan to be ruthless. In a deleted clip, Duncan mention he is glad to be away from Alejandro while taking the Drop of Shame.

Hawaiian Punch
Duncan continues to support Cody and glares at Alejandro for nearly killing Cody in order to win the tie-breaker. In the alternate ending, Duncan is shown pleased and even compliments Heather's tactics when she knees him in the groin and slaps him, causing him to fall on a block of ice and slide down the volcano, congratulating her for taking "La Cucaracha" down. In both endings, he, along with everyone else, didn't bother to help Alejandro up after they trampled him.

Trivia

 * Despite saying he doesn't trust Alejandro, Duncan worked together with him several times. This was most probably so he could be able to backstab him in the future.
 * By working together with Alejandro, Duncan caused the elimination of his girlfriend (unintentionally), his friend and later himself.