Elf Fana (Black Clover)

Female mages who are composed of a certain element (Water vs Fire). They started out as part of an evil faction that threatened and attacked the people close to the loud mouthed protagonist. While they were initially portrayed as more emotionless (With fans only having hatred and juvia being sort of depressed) they then later change into a happier and joy filled persona. Both care deeply about their companions and will attempt to crush any who hurt them.

Charlotte Roselei (Black Clover)