Thanks guys for your answers…
! So it was better handled in the original… in the redrawn version Garou was shown in his flashback as a kid to be fond of monsters in a tv show because they always train and try to defeat the hero again and again, he clearly just wants to become stronger and test his ability against heros. And when we consider that there are groups of Heros wo fight for Positions the only difference is that he calls himself a monster.
By the way after rereading the manga, Snecks words in his fight against Suiryu and doubt why he has chosen to be a hero if there are people way stronger then him that dont need protection with the ending of him saving Suiryu is just brilliant writing..