Gwendolyn "Gwen" Wu is a recurring villain of the 2008 television animated series The Mighty B and also one of the three secondary villains of the 2010 animated horror film Alvin and the Chipmunks: The Demonic Possession and a member of a biker gang. She is voiced by Jessica DiCicco, who is well known for voicing Malina from The Emperor's New School, Flame Princess from Adventure Time, Maggie "Margaret" Pesky from The Buzz on Maggie, Olette from Kingdom Hearts 2, and Penelope Patterson from Kick Buttowski.