Patrick and Alternate-Universe Patrick are Fighting
Alternate-Universe Patrick appeares in Roller Cowards and Rule of Dumb. In Roller Cowards, AU-Patrick called Patrick a "Big fat crybaby." Patrick responded by punching him and saying 'I thought we settled this the last time," meaning him and Patrick encountered each-other before. In Rule of Dumb, AU-Patrick looks like Patrick, but with an evil expression and deeper voice. Patrick and AU-Patrick can only see each other using a mirror. They can reach into each others worlds (Proven by Patrick, when he punches AU-Patrick.) Patrick and AU-Patrick don't like each other very much.