User blog comment:Otherarrow/Things I have noticed./@comment-2028075-20100616042338

 Update 1: Doma is the only pre-FE6 final boss who doesn't either say the evils in men's hearts will bring him back, or that things are not yet over even with his death. 

I think Not all of them were evil.

Nergal, got messed up for Aenir, he doesnt kill anyone. (Linus and them gets killed by His minions, note)

Demon king, well, he gets killed, (he warps Lyon's body, )

Well, for the Bad guys...

Medeus-He hates Man kind (kills Nyna and them in book2)

Manfroy,Liedrick- Uses magic to, Manfroys turns the dark warlords, while Liedrick seals Briggid into stone.

Zephiel- Kills a lot of people, and in Hasha No tsurugi, he is shown how he kills his father.