Delta, when not engaged in combat, is a bouncy, happy-go-lucky practical joker. She's a bit tomboyish, but she's always friendly and chirpy; until, of course, she engages in combat, whereupon she seems to become psychotic. Her Trump, Queen's Embrace, doubles her strength and speed, and gives her a sort of vampire-like capability to feast on flesh and gain more gelatinous body-mass should she lose any.
She's known to play in the blood of her kills.