All of my characters names came from name generators. Whoops~
Aspel Cassul, Darius Delacreaux, and Lionward were all from the rum and monkey Final Fantasy name generator. I don't even remember what combination of names I entered for Aspel's name as I've never been able to replicate it even once since I originally got it.
Riyeko was just a Japanese name (PB is Japanese) that I found fitting since it means "Child blessed with logic" and that seemed terribly fitting. xD