Mikey angst!(Quiet pain)

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That said, he is still incredibly intelligent. He is frequently praised for having "a way with machines". He is a skilled scientist, engineer, and mathematician. He begins to devote more of his time to studying technology, biology, physics, chemistry, mathematics, metallurgy, and eventually astronomy (as of Season 4) than ninjutsu.

Although he is a skilled martial artist, he often puts more faith in his high-tech gadgets and machinery than spiritual advice and traditional ninjutsu methods taught to him by Master Splinter. Because of his genius-IQ level, Donnie tends to over-analyze, overthink, and over-complicate things (especially Splinter's advice), ultimately putting too much of a burden on himself and making bad decisions.

Similarly, his social skills are slightly lacking. His nerdiness can sometimes get in the way of properly communicating and connecting with others. He’s frequently teased by his brothers (especially Raphael) about his unrequited feelings for April and his inability to take a hint. Early in the series, he had to make himself a flowchart in order to navigate interactions with her. When it comes to explaining complicated things, he sometimes forgets that others are not on his same intelligence level—leading to confusion and frustration for all parties. However, he becomes more socially skilled as the series goes on.

Donatello's characterization more closely aligns with his mischievous 1990s film iteration than his soft-spoken 2003 iteration. The fact that he is only a teenager learning everything on the fly is heavily emphasized and he frequently answers questions from his brothers with sarcastic and outlandish responses before yelling that he doesn't know.

He is much more high-strung and quick to anger than any of his previous iterations. He frequently gets frustrated when he can't accomplish a task. He can be defensive and argumentative, especially when his intellect is challenged (though ironically with Fugitoid, they both get along really well). He has been known to lash out whenever someone messes with his inventions or experiments, especially Mikey, but it's often verbal rather than physical. Despite this, Donnie is overall a compassionate character and would support his family and allies anytime.

Donnie is a mutated anthropomorphic turtle with brownish green skin. His signature color is purple, most prominently featured in his purple mask. His weapon of choice is a bō (rokushakubo) which also converts to a naginata (a Japanese halberd) via a switchblade inside one end of the staff.

Unlike all his previous incarnations, Donnie is much taller and skinnier than his brothers. He also has a gap between his teeth and distinct brown-red eyes. When in combat or when being stealthy, he has whited-out eyes (like the 2003 incarnations).

Just like most incarnations, he wears a purple mask where the tails of the mask are longer than any of his brothers, except for Raph's. His ninja gear consists of a strap over his ninja belt, brown knee and elbow pads, light brown bandages wrapped around his ankles, wrists and white bandages wrapped around his fingers. Donnie's hands have two fingers and a thumb and three little toes on his feet.

Donatello is the brains of the team: scientist, hacker, mechanic, inventor, and weapons specialist. He designs and manufactures all the tools, gadgets, armor, vehicles and weapons in Turtles' arsenal.

In this iteration, his massive crush on April O'Neil plays a major role in his characterization. He develops a rivalry with Casey Jones (April's usual love interest) as a result of this and also most likely as a callback to their relationship in the 1990s film.

Raph can be unpredictable, and his ferocious temper can sometimes frighten enemies even his brothers. He can be very aggressive when trying to solve problems, even with his family and allies. Sometimes during training, Raph can get hostile, and he would do anything he can to beat his brothers in sparring matches. When he feels misunderstood or irritated, he would erupt at any given moment, occasionally "quitting” the team

Just like other incarnations, Raphael is the muscular hothead of the ninja turtle quartet. However in this incarnation, Raph can be erratic emotionally. He is brave, daring, free spirited, and while Michelangelo is the comedian of the turtle quartet, Raphael is the most sardonic and sarcastic. He is very athletically adept. He is also very close with his allies, friends and pets. However, he can be very willful, stubborn, incredibly rude, and aggressive. He is also the most relentless of the turtles, his relentless ferocity makes him a deadly fighter.

Raph loves to fight, wrestle, and trash the place. If there’s a brawl, Raphael would love to join in the fight whenever you like it or not. Because of his passion for fighting, he would fight first and reflect and ask questions later.

He doesn’t tolerate offensive teasing from anyone. When people and or even his brothers mocks him, he would put up a fight. When Mikey is teasing him in his mischievous ways, Raph would either yell at him or beat him up playfully.

Leo is a perfectionist. He wants to make his friends and family proud of him. When he makes a mistake he would go hard on himself. Although Leo tries to keep his brothers in line, he can be also very bossy and controlling at times which would trigger his brothers especially Raphael.

Being leader and, later, sensei is a lot of responsibility, but it’s sometimes even harder when his three younger brothers talk back to him, team up to mock him, or when Raph and Donnie in particular challenge his leadership. Leo can sometimes make rash decisions too, like doing crazy one man missions, storm off, or getting into mischief with his sister. Although Donnie and especially Raphael are the ones who would reall

Personality Leo is an enthusiastic ninjutsu prodigy. He leads the various missions of the Turtles. Like previous incarnations, he is named after Leonardo da Vinci. Because of his persevering dedication towards ninjutsu, and his level-headed discipline, and partly because he asked for it, Splinter wisely chose Leo to be the leader of the Turtles. As Splinter explains, it's because his leadership abilities and skills "doesn't come from the head, but from the heart."

Like his little brother Mikey, Leo also shows multiple occasions involving his sense of empathy and compassion, and knows what's right and what's wrong, and can tend to show mercy. Specifically, Leo spares Fong when the Turtles defeated the Purple Dragons in Murakami's restaurant, much to Raph's dismay, stating that they don't show mercy on criminals who hurt innocent people. It was later proven wrong, when Fong helped the turtles by giving Leo the katana when Xever, Bradford, and the Foot overpowered them. His sense also led him to believe that there is a good side, and a change-of-heart in people, even when he shouldn't, like when he believes Karai can be good, and wanted to get her on his side, especially when he learns that Karai is actually Splinter's long-lost daughter, but was often manipulated, outplayed, or tricked until she finally learns the truth for herself. He was even eager to take Karai to the lair to see her true father, much to Raph's apparent disbelief

Leonardo voice sounds currently more adult-like. His change of voice is explained by the character having wounded his larynx (vocal cords) in the aftermath of the battle in the Season 2 finale.

Appearance Leo is an fern green colored anthropomorphic mutant turtle ninja warrior. His eyes have cobalt blue irises with black pupils, but like his brothers when they are shown fighting or being stealthy, they disappear, leaving his eyes white (similar to the 2003 incarnation). He wears a royal blue bandana mask (although he wears a black bandana in Broken Foot and Owari) where the tails length range between Donnie and Mikey's. Leo is the most skilled fighter, and he doesn't have much changes to his physical appearance like all his previous incarnations. His height ranges between Raph and Donnie's. His ninja gear includes diagonal straps, brown knee pads and elbow pads, and beige rolled bandages wrapped around his wrists, ankles and fingers. However, unlike previous incarnations, Leo's hands have two fingers and a thumb and three little toes (like his brothers) on his feet.

Leonardo is the fearless ninja leader,bravest of all of them and kinda just obsessed with studying all the time as possible to keep himself focus as the one who leaderships the missions and his brothers under control.

Raphael:The strongest of the four brothers,it' a battle machine basically and the most of the time he seems to show anger issues,rage in a inmense power,lower common sense and barely any sign of love and empathy.

Donatello:He is the smartest of all of them to the point he earned the tittle as the tecnologic genius of all,calculator,really good at math,very bad at romance and showing or expressing his emotions,hates most of the physycal contant and is obsessed with the time and how he spends it.