Leonardo is a mutant turtle. He has trained to be ninja. His father, Master Splinter, mutated rat, trained him since 5. Leonardo have 3 more brothers, but he is oldest. Leo have an excellent self-control, he is observant, he knows the value of honor and respect. He is bold, determined, calculating. He often hide his real emotions under the mask of seriousness and prudence, but he have sense of humor and he can be playful. He's a hero, even though he doesn't think that way.