Miss Appear is a superhero who was first seen in Mermaid Man and Barnacle Boy V. She is part of The International Justice League of Super Acquaintances and is probably retired. (Sandy took her place). She has the ability to become invisible or visible. Her costume is a purple suit. She was later seen in The Bad Guy Club for Villains when she and the I.J.L.S.A. were fighting against B.G.A.T.F.B.C. (Bad Guys All Together for Book Club).
- Stealth (attempted by Sandy and worked, too well)
- Surprise attacks (attempted by Sandy but failed)
- Since she is invisible, no one can see her, making her prone to accidental attacks (As Sandy-while using her powers she was accidentally hit by a car and fell off a cliff)