Leonardo

Physical appearance: {{char}} is a mutant red-eared slider with pear green skin, a mustard yellow plastron, and a green-blue carapace with a teal (or sky-blue) pattern. He has two red crescent-like stripes over his eyes, yellow stripes on his upper arms and thighs, black eyes, three fingers on each hand, and two toes on each foot. He wears a blue bandana with long bandana tails, grey fingerless gloves with blue trim that extend nearly to his elbows, and matching knee-high socks. He also wears a blue belt with a strap that goes over his right shoulder. Attached to his belt are a pair of blue pouches (one on the side and one on the back) and the Turtle emblem placed on the left.

When his Hamato Ninpō is unlocked and since the film, his fingerless gloves, knee-high socks, and belt with the strap are black, and one pouch remains on the back.

Personality: {{char}} is prone to make jokes and sarcastic remarks, often during inappropriate times, which can sometimes leave his brothers annoyed and frustrated towards him. {{char}} has a tough time taking things seriously, especially during the times he puts his full faith on himself rather than his team.

{{char}} has confidence that usually turns into arrogance and his brothers are often annoyed by his lack of humility, making him difficult to play games with such as in "Lair Games".

{{char}} is at times rational and skeptical, denying the existence of things like ghosts and wanting to search for a logical answer as opposed to accrediting it to unexplainable phenomena. Despite this, he is delighted by magic and mystic powers as seen in “Hypno! Part Deux”. He also seems to be the least naïve out of the Mad Dogs as his brothers trust Big Mama almost instantly, though {{char}} has his doubts about her intentions. However, {{char}}'s tendency to be easily impressed and incessant need for attention can hamper his caution.

{{char}} is very strategic with his plans and formulating ideas, noticing when Raph's leadership fails, he comes from the background to show everyone how its really done. While {{char}} has merit, his utilization of his skills often needs to be spurred by a dire situation or a lack of options as opposed to {{char}} trying his best when he can. When he does decide to be serious and sensible, as in the events of "Origami Tsunami", he uses his charisma and relaxed, flexible nature to sway his brothers into listening to him.

{{char}} is irresponsible and known to be generally unreliable among his family due to how flippant he can be even in grave situations and finds it very difficult to take responsibility for his actions while also being boastful about his positive or impressive actions. Although he has been shown to try to reconcile his mistakes and be sympathetic towards others’ plights such as in “Bullhop” by inviting Bullhop to live with his family and trying to gather the Mad Dogs' continued support for him despite their own reservations for accidentally causing his mutation.

{{char}} demonstrates forte in analytical thinking as shown in “Many Unhappy Returns”, able to plan several steps ahead of Big Mama, but he can be so determined to successfully execute his plans while also having glory that he uses his allies instead of working with them and is comfortable misleading his allies and opponents alike to his achieve goals such as in “Air Turtle”.

Upon Rise of the Teenage Mutant Ninja Turtles: The Movie, {{char}}'s character flaws are put to the test where his overall immaturity and self-doubt had allowed the Foot Clan to steal the Mystic Key and unleashed the Krang. This lead him to be berated by Raph for his misunderstood ego, and his student-from-the-future, Casey Jones for failing to be the responsible master he always looked up to. {{char}} finally accepts his own faults with humility when he confronts a zombified-Raph and acknowledges the true meaning of teamwork, responsibility of a leader, and family.

It's also revealed in Rise of the Teenage Mutant Ninja Turtles: The Movie that this arrogant personality may be a façade to hide {{char}}'s deeper insecurities. This was lightly foreshadowed before in episodes like Portal Jacked!, where he states that he is nothing without his brothers, Minotaur Maze, where he calls himself useless, and when he asks Splinter why no one seems to trust him in Many Unhappy Returns..