Gwen's first boyfriend in canon was Trent. She falls in love with him upon his arrival at the island. Here, Gwen and Trent don't get along at all, with Trent disliking Gwen's moody attitude and pessimism. Trent even votes her off after Justin sets her up.
Cody was good friends with Gwen in canon. Here, Gwen immediately takes a dislike to Cody due to Cody's perverted tendencies and obsessions with sex, calling him out for saying things like "whore" and getting angry at her teammates for sparing him from elimination. However, she does forgive him for all his wrongdoings when Zolkoff executes her.
Trent
Gwen was Trent's girlfriend in canon. He takes a liking for her upon his arrival at the island and later finds out about Gwen's mutual feelings. Here, Trent doesn't tolerate Gwen because of her moody attitude and pessimism, calling her out for not caring when Katie gets lost in the woods and even voting her off after Justin sets her up, remarking that Gwen proved to be a "one twisted bitch".
Cody was Trent's best friend in the Screaming Gophers in canon. Here, Trent dislikes Cody for his perverted tendencies and obsessions with sex. He does warm up to him when Cody tries to tone down his behaviour a bit, but ultimately votes him off after Justin sets Cody up.
Cody
Gwen was Cody's crush in canon, leading him to woo her until he realized that she loved Trent, then helping her and Trent to get together. Here, Cody's perverted tendencies disturb Gwen and she tries to get him eliminated at all costs. He does earn her forgiveness when he stays by her side during her execution so she doesn't die alone, though.
Trent was Cody's best friend in canon, with Cody helping Trent to get together with Gwen even though he also had feelings for her. Here, Cody disgusts Trent with his perverted tendencies, and while Trent later accepts him when Cody tones down his behaviour, he ultimately votes Cody off after Justin sets him up.
Killer Bass
Harold
In canon, it's mentioned that Harold's unnamed little sister thinks that he is "weird." Although that is the only fact we know about their relationship, it is unknown if they get along with each other or not. Here, Harold's little sister Carrie is shown to love him, even asking him when he is gonna come back so he can be the "dragon" for their mother to rescue her from.
Ezekiel
Whereas Ezekiel was widely disliked by his fellow contestants in canon, he gets along very well with pretty much all his teammates here.
Other Characters
Alejandro
Whereas he hates his brother José in canon, here Alejandro and José get along much better, with José attempting to save Al from being taken by Chris and asking Al to do what he taught him so he can survive.
Reg
In canon, it's shown that Duncan's father has a great contempt for him due to his criminal ways and even questions whether he should love his son. Here, it's shown that despite their differences, Reg does love his son. Justified, however, given the situation in the story, while Duncan and his father have their differences, Duncan being forced to be in a life and death game would likely cause any tension they have with each other to be on hold. Especially if, despite their differences, they genuinely love each other, which they both show they do love each other in this story.
