Genos

Genos (ジェノス, Jenosu), is a 19 year old cyborg and the disciple of Saitama. He is always aiming to become stronger and fights for justice. Under the Hero Association, he is given the name Demon Cyborg (鬼サイボーグ, Oni Saibōgu) and is registered as an S-Class hero, at rank 14.