@radkube
*This is probably one of the more famous ones > Re:Monster.
*He isn't a monster but people mistook him for one often > Isekai Ojisan
*MC isn't a "monster" but you can't call him "human" (not fantasy) > No Guns Life
*Pretty famous. Starts as human, ends as a cross hybrid. (not fantasy) > Tokyo Ghoul
*Another MC turns to cross hybrid. > World Embryo
*2 MCs. One is Demi-Angel. Other is fallen God. > LESSA
*MC becomes zombie in a sense. > Immortal Regis
I second everything MoonMan-kun suggested and Isekai Ojisan. Might as well have been a monster
If monsterous as in acts like a monster/villian is acceptable, Saga of Tanya the Evil's anime adaption was very enjoyable at the least.
Unfortunately I do not have a recommendation for a monster who acts monstrous (other than overlord, which is kindof half monster/dead inside, half human cringing at his own life)....
As a lesser known/lower quality suggestion, Skeleton Soldier Couldn't Protect the Dungeon. He isn't op at first, but his cheat skill guarantees he will become op so might as well be. He is like subaru from re:zero, +evolutions −skin.
i liek
i no like sscptd
cus its harem
and harem is shit
sorry
pls respect my opinion
u can like it tho
i respect ur opinions
i just think
harem es shit
Tensei Shitara Dragon no Tamago Datta - Ibara no Dragon Road. The MC is a dragon. Not OP from the first chapter, but the pace of getting stronger isn't particularly slow. If OP from the very beginning is indeed necessary, then skip this title.