Anime where main character is a monster?

when i say monster it can be a demon,vampire,anything what is monster like no mercy. please don't say because watching or finished vampire knight naruto bleach ao no exorcist deadman wonderland nura rise of the yokia clan the legend of the legendary heroes blood+ inuyasha hellsing there is more but cant remember names. it needs action can have comedy(if u want)romance(if u want) ecchi(if u want)