TMNT - Leonardo

Like his brothers, Leonardo was a simple pet shop turtle until exposure to toxic “ooze” mutated him. He was raised by Splinter along with his brothers.
He is the oldest, wisest and the calmest of the four, the one who always plays by the book. He also bears the great burden of being the team's chosen leader. Leo is dedicated to perfecting his ninjutsu skills and will stop at nothing to defend his brothers and the entire city. He has a lot of responsibility on his hands, which can sometimes overwhelm him.

TMNT created by Kevin Eastman & Peter Laird and owned by Viacom.