Rippen is the main antagonist of Penn Zero: Part-Time Hero. He is an art teacher at Middleburg Central High and a part-time villain. Rippen is diabolical, menacing, and calculating. He is willing to use underhanded tactics to achieve his goals, like destroying Penn's MUHU if Penn doesn't turn the sleigh around in "North Pole Down", and trapping his parents in the Most Dangerous World Imaginable so that no hero would stand in his way. His main ambition is to become a full-time villain and outdo his sister Vlurgen, doing whatever it takes to achieve it, even desiring to get rid of Penn once and for all. Being very serious, Rippen gets easily annoyed with Larry's antics and anything that goes wrong. He is also short-tempered, quickly losing his patience and cool demeanor when his plans are th