スルト(Fate)
Main antagonist of the Norse Lostbelt in [[Fate/Grand Order]]. A fire giant who sought to destroy the world after devouring Fenrir, but was sealed away by Odin. He becomes infatuated with [[Ophelia Phamrsolone]], and possesses [[sigurd (fate)|Sigurd]]'s body, noted by how his eyes change from blue to red.
surtr (fate)