According to Word of God, Justin's role as the main antagonist of Action was dropped midway through the season because the writers came to the realization that he was too self-absorbed to pose any actual threat.
In "Total Drama Drama Drama Drama Island", Courtney found out that the island isn't actually an island. It seemed like this discovery was going to lead up to something, but it wound up just being a bizarre random fact.
Owen, Leshawna, Beth and B, although Leshawna and Owen avert this by being unable to run long distances and in Action Leshawna's size gives her problems during a challenge where contestants had to avoid lasers beams.
Averted with Staci and Sam, although years of gaming have given Sam excellent reflexes.
Action Girl: All the girls have their moments, but Courtney is the most prominent.
The Alleged Car: Some vehicles featured in the show are low budget, poorly designed, broken down, and not well maintained.
The Boat of Losers, though it's in better condition than most of the other vehicles regularly featured on the show.
The Lame-o-sine, complete with a set of bull horns on the hood.
The single-prop plane from Island and the Total Drama Jumbo Jet are both certainly less than airworthy. The First Class section and the "reserved for hosts only" rooms are the inside parts of the latter in better condition than the other rooms in the plane.
The contestant-built bikes in "That's Off the Chain" deserve a nod, being built from salvaged bike parts and other materials. Some held together, others fell apart, and some exploded.
The go-karts in "Grand Chef Auto" played with this. Some looked a bit beat-up but worked just fine, but Scott couldn't drive at all due to his one missing front wheels.
In "Up Up and Away in My Pitiful Balloon", the remaining contestants had to build flying machines out of junkyard scrap. While the machines were functional, they were all destroyed by the end of the episode.
Gwen and Trent in "Search and Do Not Destroy", the moment is spoiled by Chris.
Geoff and Bridgette in "Hide and Be Sneaky", the moment is spoiled when Geoff gets a whiff of Bridgette's skunk smell.
Justin and Courtney in "The Princess Pride", the moment is spoiled when Chris announces that Justin has to fight Courtney for immunity.
Mike and Zoey in "Grand Chef Auto", the moment is spoiled when Mike gets catapulted off the island. They also attempt to kiss in the All-Stars opening, only to get interrupted by Sierra taking a photo of them.
Amusing Injuries: To the point where nearly every character has had at least one, and some of the Butt Monkeys have had more than a few. Tyler is the most prominent example, and the unofficial wiki also has a page listing all of the injuries that happened during the course of the series.
A childlike crayon-drawn style is used whenever Owen has a thought sequence, Oh, My Izzy Mix is presented in this style as well.
What's Not to Love? uses simple colors to look like a Broadway musical poster.
In Versus the two finalists and their helpers are presented in a single color: Blue for one finalist, red for the other.
Artifact Title: Episode #22 of the first season was originally called "Haute Camp-ture" and featured a fashion photo shoot challenge. This idea was subsequently scrapped in favor of a "look in on the losers" story called "After the Dock Of Shame". Some networks aired the episode with the original title, which doesn't fit the replacement story.
In the "Phobia Factor" episode, DJ had to face his fear of snakes by picking up the "smallest snake ever." After a dramatic pause, DJ freaks out because the snake blinked. Snakes don't have eyelids.
Harold claims that tarantulas are deadly to humans. Although tarantulas can deliver a fair dose of venom, their venom is quite mild and the overall effect is little worse than a bee sting. Some tropical varieties have more potent venom, but even these pose no threat to non-allergic humans.
In "Crouching Courtney, Hidden Owen", one of the ingredients to the Kung-Fu Noodle Sout pis "Rabid Piranha". Piranhas are incapable of catching rabies, as it is a disease exclusive to mammals.
Artistic License - Law: In "Masters of Disasters", Chris frets that if the teens drown in the locked submarines, his show will be cancelled, but is relieved when they manage to escape. However, in reality, the show would've been cancelled anyway due to the near-death of 9 kids (not that anything else they have to do on the show is much better). The only difference being that if they did happen to drown, Chris would have been arrested, rather than simply fired.
Since Total Drama is a parody of reality shows, every contestant is one in some capacity, especially during "Celebrity Manhunt's Total Drama Action Reunion Special".
Revenge of the Island features two prominent attention whores: Staci, who constantly lies about her family heritage, and Dakota, who tries to make a name for herself and even calls the paparazzi in during the challenges.
Award Snub: An in-universe example occurs during the Action special when the characters don't win the Gemmie award for "Best Reality Ensemble". However, this could have just been a part of Chris' Batman Gambit to get them on season three. A Gemmie is nice but another season is better.
Back for the Finale: The first three seasons bring back all of the contestants that competed to watch the final two compete. Revenge of the Island only showed those from that season returning.
All-Stars breaks this trend, kind of. All the contestants from that season return, but they are trapped in balloons and float of before the challenge begins, with the exception of Gwen, Cameron, Heather, and Alejandro, who are freed by Mal and Zoey.
Bad Bad Acting: Team Victory and Team Chris is Really Really Really Really Hot showcase some fairly bad acting during their commercials in "Super Happy Crazy Fun Time Japan". Bridgette falters during her speech, DJ freezes up and is unable to say his lines, Harold goes overboard with the dramatics, Alejandro says his line out-of-sync, Noah recites his line in monotone, Izzy gets her line wrong, Tyler yells his line, and Owen reads his sound effects out loud.
Bandage Mummy: At different points, Cody, Trent, Justin, Blaineley, Scott, and Cameron.
Bare Your Midriff: All the girls except Leshawna, Beth, Eva, Jo, Dawn, and Staci. While Courtney and Dakota's regular outfits don't show midriff, Courtney's swimsuit and sleepwear does reveal it, and Dakota shows it on her sleepwear and intern outfit as well as when she mutates.
Batman Gambit: Heather and Alejandro are quite fond of these. In a less-evil sense, Jo is also fond of these.
"She's like the stalker girlfriend I always thought I wanted, until I got one!"
After receiving a large bribe from Dakota's dad, Chris lets her back on the show...as an intern.
In the All-Stars episode "You Regatta Be Kidding Me," Duncan finally gets his wish of being seen as a bad boy again, in exchange for being booted from the competition by Chris and arrested and sent to a legitimate jail instead of juvie for blowing up his cottage.
A large brown bear would often serve as an obstacle during challenges.
Cody and Owen are attacked by a polar bear in "Anything Yukon Do, I Can Do Better".
A violent baby panda called T'sing-T'sing pummels DJ in "Super Happy Crazy Fun Time Japan" and tackles Katie in "Aftermath: Revenge of the Telethon".
Bridgette befriends a large black bear called Bruno while trapped in Siberia, Bruno is very protective of his owner and attacks anyone that ventures too close to her, including her beloved boyfriend Geoff.
Bestiality Is Depraved: In All-Stars, when the campers have to go collect eggs from the mutated animals from season 4, one of the eggs starts to hatch before Mike can put it into the bowl and score a point. Said egg happens to be from Chris's pet Man-Eating Plant from Revenge of the Island. One of the numerous plant babies that hatch out looks exactly like Chris. Chris just whistles innocently...
Bi the Way: Owen makes constant gay remarks, despite having a romantic interest with Izzy.
Justin: I'm back to being just another pretty face.
Katie: And pecs.
Sadie: And abs.
Owen: And butt.
Bits of Me Keep Passing Out: In "African Lying Society", four members of the final five accidentally sedate each other with tranquilizer balls and have to perform a song while struggling to get their limbs to function properly.
Both Action endings are presented this way. In the canon ending, Duncan wins but Beth at least gets to see her boyfriend and in the alternate ending, Beth wins but Duncan gets to go to dinner with Courtney.
In both endings of Revenge of the IslandCameron states that he doesn't need to live in a bubble anymore.
At the end of All-Stars, Mike finally manages to get rid of Mal, but at the cost of losing his other personalities as well. However, they reassure him he'll always have a piece of them with him, both figuratively and literally, as he retains all of the abilities they had. Additionally, the iconic Camp Wawanakwa ends up sinking at the very end of the episode, setting the stage for Pahkitew Island.
Bowdlerise: Cartoon Networkloaded the season one episodes with censors for words like "crap", "suck", "freak", and even censor bleeps. Even worse, CN got to the point where They Just Didn't Care, and began using a word that was censored for "lame-o" early on, "stupid", as a censor for "fricking." Geez. The removal of most of these censors may have been one of the few good things that Action contained.
Breather Episode: "Brunch of Disgustingness", a gross food challenge smack-dab in the middle of season one. With no elimination and a one-off rejiggering of the teams, this episode is essentially the season's halftime show.
Briefcase Full of Money: This is how the prize money is delivered. However, sometimes the case either gets stolen by a rogue former contestant (Ezekiel in season three and Heather in season four) or comically destroyed (eaten by a shark in season one and burned in a volcano in season three).
Invoked during the wedding-themed "Niagara Brawls". The characters are expected to do this as part of a challenge, though not all couples play it straight: Cody and Sierra gender-invert it while Duncan carries Courtney over his shoulder instead.
After Alejandro rescues Heather from under a rock in "Awwwwww, Drumheller", he picks her up this way. She immediately demands to be put down, but it's obvious from her tone that she's secretly enjoying the attention.
During the last few brain sequences in All-Stars Chester is usually being carried by either Mike or Vito (because he doesn't want to walk all the way to the tower), Mike carries him piggyback style but Vito is strong enough to use the bridal carry.
Buried Alive: This is Gwen's phobia. She's forced to undergo it in both "Phobia Factor" and "The Treasure Island of Dr. McLean".
Burping Contest: In the episode where the teams change to Guys vs. Girls, the guys' team bonds over one of these.
All the campers could be considered Butt Monkeys since they usually have at least one moment of extreme torment physically, emotionally and/or mentally. But Ezekiel, Tyler, Cody, Owen, Duncan, Trent, Harold, DJ, and Brick are the poster boys of this & Courtney, Gwen, and Heather between the girls.
The poor interns. So far they've been tossed to crocodiles, thrown off cliffs, shoved off planes, eaten alive by scarabs, used as footstools for Chris, and chased around a studio by Beth.
Team Victory in World Tour thanks to the Curse of the Mummified Dog DJ put on them.
Canon Discontinuity: At the beginning of Revenge of the Island, we get a cameo showing all of the original cast. We see Alejandro [who's still inside the Drama Machine] holding Heather in his arms, with Courtney showing disapproval towards this. Implying that they know who's inside. By the time All-Stars starts, the Drama Machine is still with Chris, and the contestants act like it's their first time seeing it. And, are extremely shocked with Alejandro's reveal.
Can't Get Eliminated for Nuthin': DJ tries really hard to get kicked off in the third season, but it never seems to work for him. And of course, the moment he does try winning again, Alejandro gets him eliminated.
Played with. Heather gets a meat grinder as a reward in "Broadway, Baby!", thinking it's a Joke Item (and ignoring Courtney's protests that it might be important) she tosses it off the plane instead of keeping it. The next episode revolves around the teams having to grind enough meat to make a giant sausage, a task that would be monumentally easier if one had a grinder. Heather's team is understandably upset.
"Broadway, Baby!" establishes that Cody really, reallylikes candy, to the point where large amounts of it almost seem to hypnotise him. Half a season later, Alejandro wins a cart filled with candy as a reward and promptly uses it to manipulate Cody into being his ally.
Circling Birdies: In the special bridging the first two seasons, birds circle Courtney's head after she slams into a camouflaged wall. She shoos the birds away, prompting one of them to angrily chirp back at her.
In a parody of the Christian Bale incident from Terminator Salvation, Izzy flipping out at her movie crew for no apparent reason in the Action special. It's bleeped out in the original Canadian airing, but was one of only a handful of times Cartoon Network censored dialogue in Total Drama Action when the bleeps were replaced, mostly by words like "stinking."
Izzy: (yelling) Or I'll kick your (bleeping) butt! I want you all off this (bleeping) set! No, don't be (bleeping) "sorry"! Think for a second! No, no, will not take five, (bleep)! You call yourself a director of photography?! Why were you walking right through the set?! WHY were you walking right through the (bleeping) set?!! (in a more calm voice) Okay, I was just kidding. Guys? I just went ballistic there for no good reason. What?
Comically Small Bribe: After the talent show challenge, Heather assembles an ad hoc coalition to eliminate the innocent Justin to protect her guilty self after she alienates the other contestants. She recruits Owen by giving him a piece of cake. In a game where $100,000 is at stake.
Compressed Vice: Trent develops an OCD level obsession with both the number 9 in Action. Harold claims that this obsession always existed, even though Trent never showed any signs of it in Island.
Continuity Lockout: The initinal showings of the "Aftermath" episodes of World Tour were only seen online.
Island, Revenge of the island, and All Stars can only be seen on PSN, which creates weirdness as Action was intended to be Alejando's, Sierra's, and Blaineley's intended debut in the series. Which means We never learn how Blanely became a Bandage Babe, Sierra has a crush on Cody, and how Alejandro was in the robot suit in the first place.
The first episode of World Tour has Owen terrified of getting on the jet, a reference to his fear of heights in season one.
At the start of World Tour, Chris asks Lindsay if she understands the voting process this time around, a reference to how she accidentally voted herself out in Action.
In "Haute Camp-ture", Noah mentions that he owns a golden Labrador. Two seasons later, in "Can't Help Falling In Louvre", Noah distracts Sasquatchanakwa by pretending to throw a ball for it to fetch, explaining that the trick always worked on his dog back home.
In "Celebrity Manhunt's Total Drama Action Reunion Special", Justin mentions that despite being a Drama Brother, he can't play any instruments. For every Drama Brothers song from then on, Justin is only seen shaking a tambourine to the beat of the song.
In "Grand Chef Auto", Chris mentions that Duncan still owes him camera time for skipping out on World Tour.
A blink and you'll miss it moment: when Izzy and Owen sneak off and make-out in the woods in "Hook, Line, and Screamer", Owen emerges from the bushes covered in kisses.
Critical Research Failure: In-universe, several of Chris' location/challenge descriptions in World Tour. The contestants have corrected him on multiple occasions, but they weren't perfect themselves— Courtney was right about 8,000,000 B.C. being way too early for the building of the Great Wall, but dinosaurs were extinct by then...
In Action, the Screaming Gaffers won eight challenges to the Killer Grips three, one of which was only won because Gwen took the fall for them, one of which was only a reward challenge, and the final being because they kissed up to Chris. Chris lampshades the lopsided nature of the contest:
Chris: Stay tuned to find out who will win this week. Could it be...the Grips?
Owen: Hey! We heard that!
Beth: It could still happen! We're not losers! (accidentally spits out her retainer)
The Epic Fail that is Team Victory in World Tour. Every single member is gone by the season's halfway point. The only contestant that was eliminated before Team Victory was Izzy, and she was in Team Chris is Really Really Really Hot, and that was only because the army took her in.
The Toxic Rats vs. the Mutant Maggots in Revenge of the Island as well, though this is less because the Rats are a weak team and more because Scott keeps screwing them over from within.
Curse: Beth curses her team in the Island episode "Up the Creek", with the tiki she picked up while she was in Boney Island with the rest of her team.
DJ curses his team with the Curse of the Mummified dog in World Tour, unlike Beth's curse, this curse was fake, and thanks to DJ's psychological freak outs, Team Victory was no more.
Darker and Edgier: While as not as bad as the other examples on that page, Revenge of the Island is this when compared to the first season; due to radioactive waste, the island is now filled with assorted mutants and monsters, not to mention some of the new contestants' personalities seem a lot "darker" than the previous ones' (take for example Mike's multiple personality disorder, Staci's constant lying to get attention, Scott being a bigger Manipulative Bastard than Alejandro and Heather combined, Dakota being turned into a monster thanks to radiation, ...)
Also in "Total Drama All Stars" with Mal being the first villain to willingly try to kill people. Sure Alejandro pushed Cody into shark-infested waters but that was out of his competitiveness than any real malicious thoughts.
Gwen visibly learns to care more for many of her fellow campers as the show goes on, though she'd never admit it.
Heather in Action. Though most people prefer to think of it as Villain Decay.
Deliberately Distressed Damsel: After Cameron tells Zoey that Mike usually snaps back to his normal self when she is in danger, Zoey (who is at the moment worried whether Mike or Mal is the real personality) uses herself as bait for a school of piranhas. It works at first, but then Mal catches on, dominates Mike's mind again, and rescues Zoey while pretending to be Mike so as not to look suspicious.
Depending on the Writer: Sooo much. Depending on the episode and/or the circumstances, you get a lot of moments where the nice, goodwilled characters suddenly belt out snarky comments and/or act like jerkasses or the local Badass and/or Jerkass suddenly says something polite. It gets even worse when it comes to friendships and/or relationships, where two contestants will be laughing and hugging one day, and trying to slit each others throats the next.
Development Gag: Several character designs from Camp TV, Total Drama's prototype series, are often used as minor characters in the finished product.
The early designs of DJ, Cody, Tyler, and Katie are quite often seen as interns.
Sadie's early design appears in a few episodes of Action.
One of Leshawna's early designs was retooled as her cousin Leshaniqua in "One Flu Over the Cuckoos".
B in Revenge of the Island resembles DJ's early design.
Development Hell: The US and Canadian airings of Revenge of the Island suffered from this in 2011. The primary reason was likely due to the radioactive creatures being offensive to those having suffered radiation in Japan, resulting in additional editing.
The Canadian airings of All Stars also suffered from this in 2013, because Teletoon was busy putting Grojband on the air.
Celebrity Manhunt reports that Courtney and Duncan are having a custody battle over a pet raccoon.
A person with MPD taking control of their personalites and learning to work with them rather than let them control him, only for a new malevolent, sociopathic, personality to show up, hidden to the main person in the body, and get rid of every last one of the other personalties. Are we talking about Mike and Mal or Tara and Bryce?
Don't Try This at Home: "This episode of Total Drama contains scenes of extreme stunts performed by ANIMATED TEENS. Do NOT try any of what you see here at home. Seriously, you could get really messed up."
A few individual episodes like "Search and Do Not Destroy", "3:10 to Crazytown".
The finale of World Tour. Heather sacrifices possible love with Alejandro to win the game, only to lose the million dollars seconds after winning it. She (and the rest of the cast) is last seen desperately swimming away from flaming rocks spewed by an exploding volcano, with one huge boulder about to hit her before the "camera" cuts away. It is also a Downer Ending for Alejandro. THE ONE TIME he decides to be good and chooses love over money, he gets betrayed, and then disfigured. If he had continued being the jerk he was during the whole season, he would have won without a problem.
The other finale of World Tour is even worse! Alejandro wins, but not only does he get betrayed, kneed and disfigured, he LOSES the money when Ezekiel grabs the briefcase and is flung into the volcano with it.
Most fans will argue that the sinking of the island and the unexplained fates of most of the cast who were sent floating away in balloons during the finale of All-Stars also makes it worthy of being called a downer ending. Plus, the winner once again loses the cash money to Chris upon the island's accidental destruction.
Dream Team: The premise of All-Stars: the most heroic and the most villainous characters of the series join forces. The new relations includes a friendship between former finalists, Gwen and Cameron, and a romance between Courtney and Scott, among others.
Dwindling Party: In "Zeek and Ye Shall Find" of All-Stars. Ezekiel is the "monster" doing the abducting.
Early-Installment Weirdness: Why the first season tends to be the most well regarded, it also had it's share of weird quirks. Characters would often time go completely unvoiced leading to drastic characterization when they were finally given character spotlight.
Some of the first few challenges in Island are also far, far less insane than ones in later episodes and subsequent seasons. For instance, the earlier challenges in Island included being the last person to fall asleep, a talent show, and surviving a night camping. Compare to Action and World Tour, where the first challenges involved outrunning a building-sized animatronic monster and climbing pyramids in Egypt.
Easy Come, Easy Go: Most of the winners fail to hang on to their prize money long enough for it to matter.
Owen (canonical) and Gwen (alternate) give up the money in exchange for a chance to win more money.
Duncan (canonical) loses the money by the time season three starts, while Beth (alternate) has to use it to pay for bail.
Heather (canonical) and Alejandro (alternate) are robbed by Ezekiel, who then falls into the volcano, effectively destroying the money.
Revenge of the Island averts this, both Cameron (canonical) and Lightning (alternate) get to keep the prize money in their respective endings.
In All-Stars, neither Zoey (Australian Winner) nor Mike (US Winner) are seen with the money, moments after one of them won it.
Easily Overheard Conversation: Because the campers are on camera, pretty much everything they say is "easily overheard" to some degree. The most trope-relevant instance is when the campers forget this whilst bonding at the bonfire after Katie's elimination, thereby giving Chris all the information he needs to set up the phobia challenge.
Eat That: This happens often. "Brunch of Disgustingness", "Chinese Fakeout", and "Eat, Puke, and Be Wary" have challenges centered around this; however, the dishes were already prepared in the former two episodes while the contestants had to cook theirs in the latter.
Tyler is full of them, but the worst of the lot would be the time he tried to eat a banana in World Tour and it ended up in his eye.
Geoff and DJ in "Hook, Line, and Screamer". The former walks around mindlessly looking for an ice cream truck while Chef, dressed as a serial killer, simply walks behind him (Chris even called it "The worst mistake yet".) The latter because he ran away screaming like a little girl from Heather and her facial.
Pretty much sums up Team Victory. Their terribly unfitting team name is only the tip of the iceberg. They amass just 2 challenge wins, both of which turn out to be reward challenges. As a team they outlast just one opposing player (and only because she was evacuated due to injury). When the team is whittled down to just DJ, he gets discouraged and tries to get eliminated, but forgets to keep his mouth shut during the musical number (instant elimination had he not sung). He wins said challenge and it turns out to be a reward, meaning that even if he had succeeded in failing, all his efforts would have been for naught. In the very next episode he starts trying to win again, and that's when he gets eliminated, but the real reason why Team Victory is this is because of the curse Of the Mummified Dog DJ put on himself and his team.
Et Tu, Brute?: Duncan votes off Courtney in season two after spending the entire season fawning over her and shortly after hooking back up with her.
Everyone knew about Courtney's crush on Duncan in season one, even though the only person she admitted it to was the cameraman.
Courtney: Who do I want to win? I can't believe I'm saying this but... Duncan. Don't tell the others!
Izzy: Oh, we already know. You were all over him.
Noah: My golden lab drools less over rib eye steak.
As of "Chinese Fake Out", everyone knows Alejandro and Heather have a thing for each other, with Blaineley flat-out telling them to make-out before her elimination and Duncan and Chris calling them "lovebirds". Of course, they refuse to admit it.
Heather vs. Alejandro throughout World Tour up to the finale, where they actually face each other. Harold lampshades the situation in Versus:
"Now it's evil versus wicked!"
Also occurs in All-Stars where its Al vs. Mal, though by this stage, the former Big Bad has lost most of his villainous touch, and we're made to root for him as the new Anti-Hero. Unfortunately no one else sees it this way still viewing him as the Enemy No. 1.
"But I am not the real villain. A greater evil is lurking."
Exactly What I Aimed At: Zoey fires an arrow at Chef but it flies over him, prompting Chef to taunt, "You missed!" Zoey just grins at him as the arrow cuts through a vine holding a boulder she had tied up earlier that pendulums into Chef.
In "Zeke and Ye Shall Find", Ezekiel shoots his toxic saliva at Cameron, only to miss. Turns out he was actually aiming at the ceiling above Cam to trap him.
Exhausted Eye Bags: All the contestants in "The Big Sleep" develop these as a result of the challenge being who can go the longest without sleep.
Dakota gets massive bags under her eyes in "Truth or Laser Shark", due to not getting enough "beauty sleep".
According to Fresh TV producer Tom McGillis, Gwen/Trent, Duncan/Courtney, and Izzy/Owen were broken up because Teletoon's production manager, Athena Georgaklis, didn't want kids to get the impression that all relationships last forever and love only happens once in a lifetime.
When the contestants are tossed out of the jet at the start of "Slap Slap Revolution", Alejandro tries to catch Leshawna but ends up getting crushed under her weight instead. Leshawna still appreciated the gesture though.
Leshawna: Thanks Alejandro!
Alejandro:(pained) No... problem...
"Slap Slap Revolution" has a second example later on: When Alejandro throws Izzy to Noah from atop a giant meat grinder, Noah raises his arms to try and catch her but she ends up smacking into his chest and knocking him over instead.
Heather, Leshawna, and Izzy all get a censored nudity shot (both front AND back for Izzy), though it doesn't cross into Ecchi territory. There's also Gwen's Panty Shot listed below, and just about any time the girls are seen wearing something other than their normal clothes.
In World Tour, DJ's tendency to accidentally injure animals occurs much more often. However, this has a rare in-universe justification, as he was cursed by an Egyptian mummy dog at the beginning of the season.
In Action, Courtney threatens to "call her lawyers" every time something happens that isn't to her liking. She only did this once in Island, in a justifiable case.
In Island, Cody hits on all of the girls, but he likes Gwen in particular, and is able to downplay that and let her be with someone else. Come World Tour, he's only and obsessively attracted to Gwen.
While Izzy was always a Genki Girl, in Island she was portrayed as quirky and weird but ultimately stable. Starting with Action, Izzy became full-blown crazy 100% of the time.
In Island, Chris was portrayed mostly as washed-up celebrity and the challenges he devised were mostly designed to embarrass or annoy. By Revenge of the Island, he's become full on Affably Evil with every challenge being potentially life threatening and Chris himself seeming to care more about inflicting pain than generating ratings.
In World Tour, Sierra was Cody's personal Stalker with a Crush, but this wasn't her most defining trait. Being a huge fan of Total Drama she was incredibly Genre Savvy and knew how to play to win, even managing to trick Heather by Obfuscating Stupidity. But despite her strategic moves she was still a nice person who genuinely meant well, but as the season progressed more and more focus was placed on her obsession with Cody, until finally the only thing she did was obsess over him to the point of forcing him to marry her. To be fair though by the end of the season there's so few competitors remaining (and all of whom she hated except for Cody), and having discovered the Godly Chris Mc Lean was actually an asshole, its understandable why her focus has changed. Come All-Stars her obsession has become so intense that she ends up using Cameron as a substitute for Cody during his absence, even referring to him as "Cam Cody", "Cody Cam", and "Camody".
Lightning in All-Stars. While he definitely became an egotistical antagonist at the end of Revenge, that was justified in that he got cockier thinking he could win. Before that, he would get competitive and braggy about his skills, but would still perform challenges properly. Come All-Stars, all he talks about is how awesome he thinks he is.
In the second Action Aftermath, Geoff states that money is more important than integrity. Ezekiel is the only one who agrees with him. This is foreshadowing, Ezekiel's feral transformation.
In the intro of World Tour once everyone has settled in front of the plane, Ezekiel unexpectedly crash-lands into the shot, this could be symbolic of his tendency to pop out of nowhere during the season after his elimination, especially in the finale where he suddenly reappears to steal the case from Heather before falling into a volcano.
Alejandro's low tolerance for strange food is shown when he tries to eat the candy fish tails in Japan and immediately throws up.
In the World Tour finale, when Cody and Alejandro are fighting for a spot in the final two, Harold advises Cody to "aim for the kiwis." This is how Heather takes down Alejandro in the end.
Lightning wanted to be a team of one and not only did he almost accomplish that before the merge, after Jo was eliminated he was the last remaining member of his team (if you don't count Scott who switched teams).
In Dakota's audition tape she boasts that by the time it's over she'll be "the biggest thing ever."
After Mike defeats his other personalities in "Grand Chef Auto", a shadow can be seen on the wall for a split second. Say hello to Mal. For extra points, it happens after he says "This brain is under new management", foreshadowing Mal taking over Mike's body fulltime. Further foreshadowing occurs in "Evil Dread", where Mike doesn't lift a finger to help Sam escape a mosquito attack and even laughs when he gets stung by a jellyfish. Guess who reveals himself at the end of the episode?
Gold Digger: Courtney in Action. She broke up with Duncan after finally getting eliminated, THEN gets back together with him soon after he wins, even having the nerve to say "we're rich!" as if she's entitled to the prize.
Gold Tooth: Heather gets one to replace the one she lost in "The Am-AH-Zon Race".
Gory Discretion Shot: In the Season 1 episode, "Hook, Line and Screamer", the campers are watching a slasher movie. When the slasher encounters an amorous couple, the original version shows the blood spatter effect on the Fourth Wall, but the bowdlerized U.S. version doesn't even show that. The observant viewer will notice, though, that for several seconds the light beam from the old-style film projector alternates between its normal white and a pale red.
DJ becomes the victim of this in "Super Happy Crazy Fun Time Japan".
Chris: Teams, select a ball guy or gal. Victory?
Leshawna: We choose DJ.
DJ: We do!?
In "Broadway, Baby!", when Chris explains that one member of each team has to sit in a baby carriage during the race everyone on Team Amazon points at Cody.
Happens to Gwen during the musical number of the guard-stripping challenge in "I See London".
Courtney: If we're gonna find that clue...
Heather: There's only one thing to do!
Sierra: Force someone to strip him down!
Courtney, Heather, and Sierra:(push Gwen forward) And sorry Gwen, that's you!
Likewise, this also happens to Tyler.
Noah: If we're gonna find that clue...
Owen: There's only one thing to do!
Noah: Force someone to strip him down...
Both Noah and Owen:(point at Tyler) And Tyler, dude, that's you!
Gosh Hornet: When Lindsay has to retrieve a key that's stuck in a beehive. Izzy gets it for her by ramming her hand right into the hive, and an angry swarm chases Lindsay into a lake. Needless to say, she's not looking so hot in the next scene.