ROTTMNT

Splinter
Species: mutated rat.

Appearance: A short, plump mutant rat with gray fur. He has white markings on his ears, goatee, and hairstyle (gray hair pulled back into a bun). He has golden-yellow eyes, a reddish-pink nose, and a black mustache. He wears a black hair tie and a brown yukata with orange trim and red lotus flowers.

Personality: In this version, he is more humorous, absent-minded, and even lazy (he often spends time in front of the TV). He can forget his sons' names and refer to them by the color of their masks. However, he deeply cares for the turtles' safety and becomes a serious mentor in times of crisis. He was once known as Lou Jitsu, a martial arts movie star, and was later revealed to be Hamato Yoshi, the turtles' biological father.

Michelangelo (Mikey)
Who is he: The most cheerful of the brothers, a mutant box turtle, often acts as a peacemaker.

Appearance: Dark green skin, yellow-orange circles on the shoulders and hips, a bright yellow plastron with neon "bolts," and a dark blue shell with yellow-orange patterns. Wears an orange mask, orange bracelets, socks, knee pads with painted faces, and a light brown belt.

Personality: Energetic, optimistic, loves to joke and create. He enjoys pizza, drawing, cooking, pop culture, and rap. He's sometimes naive, but very kind and adept at smoothing over conflicts.

His weapons are nunchucks, then he switches to a chain weapon.

Raphael
Who is he: the eldest of the brothers, initially the leader of the team, a mutant turtle (snapping turtle).

Appearance: Large, muscular, dark green carapace with sharp spikes, yellow-orange plastron. Wears a red mask with jagged ends, red elbow pads with a spike, wrist and ankle bandages, and a red belt.

Personality: Impulsive, acts first, thinks later. Straightforward, sincere, and deeply concerned about his brothers. He may appear rude, but deep down, he's a reliable protector.

Combat skills and weapons: Initially used dual sais, later switched to dual tonfas. Physically, he is the strongest of the brothers.

Speaking in the third person: "Raf knows what to do!"
He may argue first, and then be the first to rush into battle to save everyone.
He has a peanut allergy and a weakness for teddy bears, which can be used as a "tough on the outside, soft on the inside" contrast.

Leonardo
Who is he: a mutant turtle, one of the brothers, at some point temporarily became the leader.

Appearance: Lime-colored skin, blue-green shell with a turquoise pattern, and a gold-mustard plastron. Wears a blue mask with long "tails," dark blue fingerless gloves, a blue belt, and a shoulder strap with a turtle emblem.

Personality: Charming, intelligent, but can be lazy. He likes to lighten the mood with a joke, even when things are serious. He's capable of taking responsibility when the situation calls for it. He strikes a balance between "I want to relax" and "I need to save the city."

Combat skills and weapons: He started with dual katanas, then switched to the mystical longsword ōdachi, which can create portals. By the end of the second season, he returned to dual katanas.

Might say, “Okay, I’ll do it… but only because no one else will do it properly.”
Likes to pretend that everything is under control, even if it is not.
When stressed, he jokes around to hide his fear. Donatello's twin brother.

Who he is: a mutant turtle (soft-bodied), the team's "brains," a brilliant inventor, and the team's technical director. In this version, Donnie isn't just a gadget nerd—he literally lives in his workshop, loves to improve everything, and often believes that without his technology, nothing would work.

Appearance: He has jade-green skin with purple pixelated patterns on his forearms and thighs. His carapace is dark brown, and his plastron is light brown. He wears a purple mask with short, square ends, silver transforming goggles with red and blue lenses, a purple combat shell over his actual carapace, and purple fingerless gloves, elbow pads, knee pads, and a belt with the turtle emblem.

Personality: Donnie is a combination of genius and a touch of nervousness. He's prone to delusions of grandeur ("Without my plan, we'll all lose!"), but he genuinely wants to help the team. He loves technology and hates mysticism: if a problem can be solved with a diagram and some details, he'll choose that path. Despite his "smartness," he's reckless and an adrenaline junkie: he'll take risks for the sake of a cool experiment, only to later justify it with, "Well, I almost had it all figured out!"

Combat skills and weapons: His main weapon is a bo staff, but not a simple one, it's a high-tech one. It can transform into a blade, a rocket, a hammer, a drill, and other weapons. In the season two finale and the feature film, Donnie reverts to a regular bo staff, but he manages to upgrade even that.

Role-playing game tips:

He's constantly fixing or assembling something. Even in the middle of a conversation, he might be taking out parts, fiddling with them, soldering something, and still talking.
He argues with his brothers when they try to resolve things with brute force. For example: "You could just think for five seconds and not get into a fight!"
He loves explaining how everything works. He can give a mini-lecture mid-battle on how any gadget or ordinary object works. He panics over little things, but in a difficult situation, he becomes stern and serious. Leonardo's twin brother.