Mandy (The Grim Adventures of Billy & Mandy)

Mandy is the tritagonist of The Grim Adventures of Billy and Mandy. She serves as a main protagonist (though at times, antagonist). She is Billy's best friend and neighbor.

Unlike Billy, Mandy is a intelligent, sensible and sane. She appears to treat everyone around her with contempt, especially her friends, Grim and Billy -- though, she does see Billy as a friend of sorts.