In Le Tartarughe Ninja, Leonardo is a mutant turtle, and one of the four ninja sons adopted and trained by Hamato Joshi (a.k.a. Splinter), along with his brothers Donatello, Michelangelo and Raffaello.
History[]
After Leonardo rescues April O'Neil from the Piede Ninjia, he takes her back to the lair. April wakes up startled to find she's in the company of mutant turtles and a mutant rat. To ease her mind, Splinter offers to tell her of their back story; he was once a human man, Hamato Joshi, who lived in the sewer with four baby turtles that he believes a child had lost. One day, a canister of a strange substance began to hyper-evolve the turtles, changing them into anthropomorphs. Joshi himself was turned into a rat-man, as before he found the turtles in their predicament, he had been caring for sewer rats. Joshi, a ninja from Japan, raised these Turtles, one of whom he named Leonardo, as his sons and students, training them in the martial art of ninjutsu. Arrivano le Tartarughe
History 2000's[]
The Tartarughe stake out Central Park at 2:00 a.m. as they search for the monster that has been terrorizing the area. Each Tartarughe reports to Leonardo on their area they are watching, and Donatello asks if they are sure a monster exists because it sounds like something made up by a prankster. Reminding them all that Master Splinter sent them on this mission, Leo says they won't disappoint him. A woman arrives and tells Leo she's been treating the animal at her laboratory. The monster, a huge gorilla, arrives and knocks Leo down. Then the other brothers rush up and Don tells Leo that reinforcements have arrived. Il Mostro Del Central Park