IOTS—Island of the slaughtered

Heather— Heather was Total Drama's first antagonist. Famously manipulative and vicious, Heather knows what she wants and exactly how to get it. Her strategic smarts have proven effective, eliminating a record amount of contestants. She competes with her sights only on the prize money and not on making friends or finding love, using others at her advantage and only being kind when she may ultimately be benefited. This makes it difficult to differentiate her original, mean girl ways from her true heartfelt moments.

Beth— Beth was born and raised on a farm with only animal friends and her parents to keep her company. Thanks to her background, she never developed proper social skills, even stating that her best friend is actually her pet pig, Bertha. She does anything for attention, and while she excels at getting others to stop and stare, it is more often than not for embarrassing reasons. Beth herself remains oblivious to this problem. She also tends to be a very dependent person, most likely caused by her desire for everyone to like her

Justin— Justin arrives with the rest of the cast in "Not So Happy Campers—Part 1," where his arrival has more than half of the girls, along with Owen, gushing about his looks. Chris informs Justin that he was only chosen to be contestant on Total Drama Island because of his looks, which Justin has no problem with. Justin barely speaks during his time on the island, leaving his character largely a mystery, though he remains irresistible to all the female campers, especially Katie and Sadie.

Duncan— Duncan is the definition of a bad boy, being a crafty, cool juvenile delinquent who comes from a long line of policemen and policewomen. His dad, mom, uncle, aunt, grandma and cousins are all cops. He knows many tactics from his time spent in juvenile detention centers. He can carve a picture of a skull into a tree trunk and lift great amounts of weight (such as Owen, who is more than three times his size). He has a brooding, obnoxious, sarcastic and flirtatious personality, flirting with Heather despite his apparent dislike of her and mocking Courtney whenever she gets near him. He also gives Courtney the pet name "Princess" to tease her. Duncan loves to break rules to better suit himself, but sometimes the consequences are worse than what he intended. Duncan also loves to make fun of the other contestants and pull several pranks on them, with Harold being his main victim

Harold— A skinny, awkward-looking guy, Harold takes immense pride in his numerous "mad skills". Although he isn't much to look at and is often disrespected by many of the other contestants, including his own teammates, Harold is actually an incredibly resourceful young man of many talents and has won several challenges, both for himself and his various teams, impressing others in the process. Harold's geeky interests, his somewhat poor personal hygiene, and his know-it-all personality often make him an outcast among his fellow contestants and a perfect bullying target for Duncan, although he still gets to make many friends during the competition, even showing himself willing to befriend Heather when everyone dislikes her. Although Duncan hates Harold for his uncool ways and Harold hates Duncan for his bad attitude, it appears the two have a begrudging respect for one another at the same time.

Courtney— As a high achiever and a perfectionist, Courtney has a polarizing personality, but at her core, she thinks of herself as a born leader, which often leads to her not letting others have a chance to take control. Although she is extremely bossy, competitive, critical, and even manipulative at times, she can be civil and polite to her fellow competitors under specific circumstances

Cody— Cody is a flirtatious, tech-savvy geek who sees himself as a ladies' man instead of a nerd. He joined the show primarily to be with the "cool" kids; his own kind, or so he thinks. His self-named "manly charms" and "smooth moves" are famously not so smooth, failing him around the other contestants such as Trent, when he tries to imitate Trent's sitting style only to fall over. Cody's usual tactic of getting women involves him using pick-up lines that sound irresistible to him, but irritating to everyone else. Most of the girls he flirts with usually end up annoyed or amused.

Noah— Noah comes off as being sarcastic, cynical, pessimistic, and lazy to most; even though he is far from being unethical. He is extremely intelligent but finds physical activity as laughable as the ridiculous antics of some of his peers. His misanthropic attitude has a tendency to repel friendships, apart from Owen or to a lesser extent, Izzy. He seems to be closed off, not willing to disclose much about himself as he didn't give proper answers in his profile. Despite his weak body structure, Noah doesn't seem to be afraid to insult those who are clearly physically superior.

Chris— Chris McLean is the primary host of Total Drama. He is an overwhelming narcissist, with little concern for the well-being of his contestants – and even sometimes best friend Chef Hatchet as well. Chris feeds off the pain of the teenagers, physical and emotional and strives to keep the drama in Total Drama alive at all times. He is a very selfish and arrogant man as he does not care about anyone or anything but money, higher ratings, and personal pleasure gained from the pain and suffering of others. Chris also enjoys messing with and preying upon the relationships of the contestants for his own personal gain as he loves it when contestants bicker, argue, and fight amongst each other.

Gwen— Gwen is a goth girl and loner whose interests lie in art and astronomy. She is smart, independent, kind-hearted, and level-headed, stating her best quality is her inability to get excited over minuscule things. Her attitude at first seems very harsh and sarcastic, but she is not a bitter person. Rather, she is cautious of whom she lets into her life. Beneath her tough exterior, there is a kind heart that learns to trust

Geoff— Geoff may not be the smartest contestant in the bunch, but he has a positive attitude, loves people, and is always up for any challenge Chris has in store. He has a habit of addressing everyone as "dude" or "bro/brah," depending on the gender. He is extremely fun-loving, believing that life is short and if someone "doesn't stop and have a party every Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday, they're going to regret it." Geoff's big heart doesn't exclude even the more reserved. However, if given enough motivation, he won't hesitate to pay people back for their misdeeds. Geoff's caring way automatically clicks with Bridgette's, and upon the formation of their relationship, the two are inseparable ever since.

Owen— Owen is a huggable, upbeat, fun-loving, friendly, passionate, and optimistic competitor, who is basically in Total Drama to have fun, not for the grand prize. Owen’s three biggest loves are eating, having a good time, and farting. Among his peers, he is arguably the most popular contestant of all time for his cheerful ways, optimistic viewpoints no matter what the situation is, and ability to see the best in other people. He even accomplishes the impossible in making a friend of Chris. This niceness however, also made him oblivious that some people don't like him back, even when they are offending him to his face.

Bridgette— Bridgette is a calm, compassionate surfer girl who loves animals as much as she loves the water. She is a vegetarian, finding animals to be her friends, not food. In contrast to her aquatic aptitude, Bridgette is known for being very clumsy on land

D.J— DJ can be described as a "teddy bear". While his large size can make him look intimidating, his true demeanor is anything but that. He is actually a very soft spoken and sensitive guy who is very compassionate and kind to those around him. He is often seen sleeping with a teddy bear and tends to cry or overreact to many minor situations. However, DJ wants the best for everyone and values the safety of everyone else more than winning a challenge. He loves animals, and has adopted a few pets during his time on Total Drama. Unfortunately, they don't always return his affections. Many of DJ's encounters with animals end with one side sustaining injury. His compassionate behavior has made him one of the most popular competitors among the cast, a mama’s boy

Chef Hatchet— Chef Hatchet is the aggressive and military-tough sidekick of Total Drama host Chris. He provides the meals for the contestants, disgusting slop which has been slammed by all but a few competitors, but even they have complained about it at one point or another. However, some episodes have suggested that Chef actually does have exceptional culinary skills, meaning he prepares disgusting meals for the contestants on purpose. He will take over as primary host when Chris is absent or when he is told to do so. Given that both derive equal enjoyment from harming the teenagers, it is hardly a far cry from the normal routine. Chef is bigger, louder, and much more confrontational and intimidating than Chris, who prefers a different outlet of striking fear into the contestants. However, Chef still has standards and will sometimes express admiration or even concern for the contestants, only to be ignored by Chris.

Eva— Although Eva is very competitive and physically strong, she is often overly violent and aggressive. She is also deranged and is known to have a short temper and violent ways of exhibiting her anger. Part of the reason she auditioned for Total Drama was to curb it, and she mildly has.

Ezekiel— Ezekiel is a naive country boy who was home-schooled at his farm and came with disgusting habits such as picking his nose in front of others. His lack of interaction with other kids has left him with incredibly poor social skills and a tendency to say and do things that rub people the wrong way, even if his intentions may be good. Ezekiel also has some rather warped viewpoints on life, mostly due to his parents. He initially believes that women are inferior to men and also seems to value money over his relationships. However, it appears that Ezekiel is simply repeating what his parents told him and that these are not his own ideas.

Izzy— Izzy, in Noah's own terms, is as "nutty as a ten-ton bag of pecans smothered in peanut butter, encased in a cashew the size of China". She is fun, but hard to handle and to the other contestants, more trouble than she is worth. Izzy has extraordinary athletic and fighting abilities, and also sticks herself to the wild environment. She is also number eight on the RCMP's "Most Wanted" list, presumably for accidentally blowing up a kitchen, but it is unclear whether she was telling the truth

Katie— Katie is most notable for being Sadie's best friend. They do everything together. They even wear the same outfits which Katie sewed herself. Like Sadie, Katie is a sensitive, cheerful, and kind-hearted girl. She's boy-crazy and when she has grown attracted to someone, she (and Sadie) will fawn over him endlessly. Katie can be considered as the more passionate one between her and her best friend

Sadie— Sadie is most notable for being Katie's best friend. They do everything together, including wearing the same outfits (which Katie sews herself). Like Katie, Sadie is a sensitive, cheerful, and sweet-natured girl. Sadie shows herself to be rather emotional, even more so than her best friend. She cries whenever she is upset, and lashes out at those who cause her anger. She is boy-crazy and when she grows attracted to someone, she and Katie will fawn over him endlessly. Sadie can be considered the more logical one between the two.

Lindsay— Lindsay's big heart and childlike innocence made her one of the most well-liked competitors on the show. Although the other contestants are frequently annoyed by her noticeable lack of intelligence, Lindsay has been shown to only have pure intentions. A major running gag on the show involves her having problems remembering the name of others, even if that person is her boyfriend

Leshawna— Leshawna is cheerful, confident and very thoughtful to those who are respectful to her, with large generosity. She treats everyone how she wants to be treated. Her main personality is her sassiness and her likeability amongst other campers, building firm relationships with those who she barely interacts with. As for those who treat her badly, she will infinitely hold grudges against them and try to avoid interactions with the subject. She is loyal and sassy, yet also can be affectionate and caring. If shown respect, she will reciprocate it indefinitely. Leshawna tells it like it is and has no fear whatsoever of calling people out on their mistakes. However, she is not one to be messed with, and will not hold back on someone who has wronged her. She will not hesitate to get physical if the matter calls for it, especially if her weight is the topic of discussion. She is not above revenge, be it on her own behalf or that of a friend, and is usually the bigger one in the situation, but is not afraid to speak her thoughts. She is extremely street-smart, and speaks in AAVE, while calling her fellow contestants nicknames such as "Baby", "Honey", and "Sugar" affectionately.

Trent— Trent is a relaxed, laid-back nice guy who tends to get along with everyone, even the immensely hated Chris. A straight-A student, he is intelligent but would rather not bring attention to it. He is known for his guitar skills, which impress several people. He is also shown as being accident-prone, suffering a number of near-death experiences and mishaps during Total Drama Island, a quick healer

Tyler— Tyler is a sports fan who loves anything physical. Unfortunately, he is extremely uncoordinated, constantly putting himself and others at risk. Tyler can also be very dim at times. Despite his shortcomings, he is extremely determined, well-meaning, and even has abnormally strong fingers, which have aided him on several occasions. While he tries to present a strong masculine image of himself as a stereotypical jock, Tyler is actually fairly emotional and sensitive