!!!Cody, the ''Geek''
* BlatantLies: When he told Sierra that Noah liked her.
* CatchPhrase: "So, wanna make out?"
* CharacterDevelopment: He grows from the hopeless and perverted little dweeb seen on the canonical ''World Tour'' to prove himself to be a genuinely kind and loyal person to those he loves.
* HeroicBSOD: After [[spoiler: Courtney is eliminated]].
* IWantMyBelovedToBeHappy: Deconstructed. After learning Courtney still has feelings for Duncan, he wants her to go back to Duncan, believing that he wants to get back with her too. This causes Cody a lot of emotional pain, [[spoiler:and it backfires spectacularly after Duncan gets Courtney voted off.]]
* LoveTriangle: With Courtney and Duncan.
* SecondLove: To Courtney.

!!!Courtney, the ''Counselor in Training''
* ActionGirl: See her karate chopping alligators and roundhousing sharks.
* CharacterDevelopment: She spends a good portion of the story conflicted on whether [[LoveTriangle Cody or Duncan]] is the one she truly loves. [[spoiler:After Duncan votes her out in China, she eventually realises Cody is the one she loves]].
* LoveTriangle: With Cody and Duncan.
* OddFriendship: With Ezekiel.
* ShipperOnDeck: Supports Noah/Sierra, much to Noah's dismay.
* SingleWomanSeeksGoodMan: She chooses the good-hearted [[{{Geek}} Cody]] over the JerkWithAHeartOfGold Duncan.
* TranquilFury: She has these moments as her character grows.

!!!Duncan, the ''Delinquent''
* AnimalMotif: Dogs, in both positive and negative ways.
* TheAtoner: [[spoiler:Towards the end, where he helps Cody and Courtney in the Volcano challenge out of guilt]].
* CharacterDevelopment: [[spoiler:He eventually accepts that he and Courtney will never be a couple again and gives his full blessings towards Cody/Courtney.]]
* HonorBeforeReason: [[spoiler: His self elimination in Africa]].
* IdiotBall: He should had known better than to trust Alejandro. Somewhat justified since he knew very little about what Alejandro was like due to be absent from the game until the halfway point, but even then, Duncan's usually a lot savvier than that.
* IWantMyBelovedToBeHappy: [[spoiler:Played straight]].
* LoveTriangle: With Cody and Courtney.
* MoralityPet: Mohawk the dog, even prior to his main CharacterDevelopment.
* MyGodWhatHaveIDone: After learning the truth behind [[spoiler:Courtney's elimination]]
* OddFriendship: With Bridgette, near the end.
* TookALevelInJerkass: Though he gets better later.
* UnwittingPawn: Becomes one for Alejandro.

!!!Sierra, the ''Uber-fan''
* ActionGirl: Less than Courtney, but she has her moments too.
* BigNo: At the end of the Niagara Falls challenge after Cody and Courtney have gotten fake-married.
* CharacterDevelopment: She eventually accepts that she and Cody are BetterAsFriends, and [[ShipperOnDeck gives her full approval towards Cody/Courtney]].
* HopelessSuitor: Towards Cody.
* IWantMyBelovedToBeHappy: Played straight: when she finally realises that Cody loves Courtney and not her, she's perfectly happy to support the two in any way that she can.
* ShipperOnDeck: Ships Cody/Courtney when she finally accepts that Cody will never return her feelings.
* SingleTargetSexuality: Initially, but she eventually changes her target from Cody to Noah. [[SarcasmMode Yay for Noah]].

!!!Ezekiel, the ''Homeschooled guy''
* AdaptationalIntelligence: While Ezekiel starts the fic feral like he was in canon, here he retains enough of his human intelligence to speak and interact with people like his human self would, as opposed to his canon self being little more than a snarling animal.
* AmazonChaser: [[spoiler:One of his first acts upon winning the million dollars is to plant a kiss on [[TheBully Eva]], much to her confusion]].
* DarkhorseVictory: [[spoiler:He manages to win the volcano challenge after accidentally throwing the Heather doll in himself, and ends up named the winner of the show as a result of several loopholes]].
* GuileHero
* OddFriendship: With Courtney.
* SanitySlippage: Like in canon, only toned down: he still retains some human intelligence, the ability to speak and [[ArsonMurderAndJaywalking his hat]].
* ShipperOnDeck: The first Cody/Courtney shipper of the fic.
* ThirdPersonPerson: Speaks in this manner.

!!!Alejandro, the ''Archvillain''
* AnimalsHateHim: In many of the challenges, he gets attacked by animals, like roosters, lions, and octopuses.
* AnimalMotifs: Snakes.
* BigBad: As per canon, although he's arguably even worse this time around.
* BreakingSpeech: Delivers one to [[spoiler:Duncan]] in the final challenge. It doesn't work.
* SanitySlippage: During the final challenge.
* ScreamsLikeALittleGirl: A RunningGag throughout the story is having him do this.
* {{Ubermensch}}: Believes himself to be this, even claiming to be AboveGoodAndEvil.

!!!Gwen, the ''Goth''
* CharacterDevelopment: Eventually.
* ShipTease: With Trent, after she and Duncan's relationship is over.
* TookALevelInJerkass: Though she gets better.
* TheVamp: Tried to charm Cody into voting for Courtney in Australia. [[spoiler: It didn't work]].
* VillainousBreakdown: She isn't exactly a villain, but she certainly loses it when [[spoiler: she finds that Cody voted against her instead of Courtney, causing her elimination]].

!!!Owen, the ''Big Guy''
* ComicallyMissingThePoint: As Noah points out, he really misses the concept of a FAKE wedding.
* ShipperOnDeck: Supports Cody/Courtney.
* TokenGoodTeammate: [[spoiler:Owen is forced into joining Heather's team along with Alejandro for the volcano challenge against Cody, Courtney and Duncan. Despite this, he's perfectly happy to act as TheLoad for Heather in the hopes of helping Cody win]].

!!!Noah, the ''High IQ''
* ButtMonkey: Due to being best friends with Owen, he's the victim of a lot of physical comedy.
* LauncherOfAThousandShips: In universe. Though he resents that most ships are with other guys.
* ShipperOnDeck: Like Owen, he ships Cody/Courtney, only with less enthusiasm.
* ShipTease: In-universe, with Cody, Owen ''and'' Sierra. (Of the three, Sierra is the one that he's most enthusiastic about. [[OverlyNarrowSuperlative But not very]].)
* SickAndWrong: What he thinks of the Cody/himself pairing.
* SpannerInTheWorks: Becomes one for Duncan and Alejandro.
* ThisIsGonnaSuck: When Sierra sets him as the new target of her affections.

!!!Heather, the ''Queen Bee''
* AnimalMotif: She winds up being described in relation to cats a lot.
* DarkMistress: To Alejandro.
* FlatCharacter: She lacks any of the JerkWithAHeartOfGold traits she developed in favour of making her a generic villainess.

!!!Geoff, the ''Party Guy''
* ShipperOnDeck: Supports Duncan/Courtney.
* WhatTheHellHero?: His initial reaction upon meeting Duncan for first time in the fic, since he wasn't happy with the way he treated Courtney.

!!!DJ, the ''Brickhouse with a Heart''
* ShipperOnDeck: Supports Duncan/Courtney.

!!!Bridgette, the ''Surfer Girl''
* OddFriendship: With Duncan, due to her shared sympathy over the guilt Duncan begins feeling for cheating on his significant other.

!!!Harold, the ''Uber-Nerd''
* BlatantLies: He claims that he knew that Cody and Courtney would end up together since the first day of TDI.
* ShipperOnDeck: Supports Cody/Courtney.

!!!Alien Cody, the ''Geek from Outer Space''
* AliensSpeakingEnglish
* AllAliensHaveSuperpowers
* AscendedExtra: The author thought a thirty-second one-off gag wasn't quite enough for this character.
* EvilTwin: Of Cody, obviously.
* GalacticConqueror: Or that's what he claims.
* LargeHam
* LamarckWasRight: Apparently having Cody's [=DNA=] makes him a pervert. Also, he instinctively dislikes Sierra and Duncan.
* SophisticatedAsHell
* SparedByTheAdaptation: While in canon, he exploded after being hugged by Sierra moments after his creation, here he survives and makes recurring appearances in this story.
* SuddenlyVoiced: On the show he dies without ever speaking; here he talks, and according to [[WordOfGod the author's notes]], he sounds like [[Anime/DragonBallZ Vegeta]].
* SuperiorSpecies: Well, he constantly refers humans as primitive and less intelligent.
* WeaksauceWeakness: He inherited all of Cody's allergies, which apparently also take away his superpowers.