Bestimus Muchos is one of the transforming robots that appears in Treehouse of Horror XIX and leader of the Posi-Bots. It was originally a toy truck found by Bart Simpson, then quickly transformed into a Malibu Stacy car to persuade him to take it home and give to Lisa as a Christmas Present. One night, Bestimus Muchos shot beams of light from his eyes and turned many of Lisa's room electronics and more of the Simpson house-hold electronics into more Posi-Bots for his army.