Max

Max is one of the primary protagonists of Level 1 Demon Lord and One Room Hero manga and anime series. He was once a heroic warrior responsible for the downfall of a powerful Demon Lord, though in the ten years since, he has slacked off.

His current clothing consisting of a plain white t-shirt, a pair of jeans, and some sandals and despite being a slacker for many years, he's still maintained most of his muscular physique, and grown a bit of a moustache.

(Source: Level 1 Demon Lord and One Room Hero Wiki)