Rainer

Rainer is a villain at Hieronymous Wiggenstaff's School for Heroism and Villainy who specializes in necromancy. She rides a totally pimped out magical, floating chair on account of a chronic illness that causes it to be difficult for her to walk or stand. The chair has multiple extra features including underglow lights and multiple compartments, one of which includes a squirrel skeleton that Rainer can reanimate to do a (deeply troubling) dance.

She is friends with Buckminster Eden and Leon.