Melise is a woman with a set of matching deer-like antlers on her head, accompanied by long, flowing hair that reaches below her waist. She wears a fancy dress with a very wide and puffy skirt. She also has relatively thin arms.
As an officer of the Big Mom Pirates, Melise has authority over lower-ranking members of her crew. Her combat powers and abilities are unknown, but she is presumably strong as she is an officer of a Yonko-led crew.