So the reason KW calls Raven, Rachel is because they call each other by their Earth names.Also I don't think they are siblings but they sort of have the same type of powers in the show, I also saw on FF.net a fic that they're sibs, so why not?
ВЫ ЧИТАЕТЕ
Teen Titans and Karaoke
ФанфикYou don't need one except of pairings. KF/Jinx, Jeri/Kole, Rob/Star, Red Star/OC(Tina), Cy/Bumble Bee, HotS/Argent, Speedy/Cheshire, and BB/Rae.
