This guy called Hanma Baki. He is an anime and manga character created byİtagaki Keisuke
He's the toughest guy i've ever seen. His story is a little complicated. His father is the strongest creature on the earth (i am saying creature in purpose cuz he is stronger than an elephant). and Baki has only one will. He wants to beat his dad. He fights very serious rivals to reachhis goal. And those fights are so violent and cool.
and i have to say that this manga is not for kids.
here is the link