I googled this dude since I never read the manhwa he's from, but these stories feature armoured characters that might resemble him a bit:
https://www.mangago.zone/read-manga/goblin_slayer/ (shounen manga; the MC is armoured; violence, gore, depictions of sexual assault)
https://www.mangago.zone/read-manga/fullmetal_alchemist/ (shounen manga; secondary protagonist is armoured violence)
https://www.mangago.zone/read-manga/berserk/ (shounen manga; the MC is armoured and a later side character - Skull Knight; gore, violence, depictions of sexual assault, child sexual assault, child abuse)
https://www.mangago.zone/read-manga/the_noble_lady_on_the_edge_of_the_cliff_wants_to_make_the_dark_knight_fall_in_love/ (GL manga; the FL is armoured; mild violence)
Sorry if they're not quite what you're looking for.
Uhmm is there any character that looks like igris from solo leveling? Any plot is fine