Newman

Newman is a character created by AwdryFan1997 for his Megacomic series. AwdryFan "pulled a Roy" (also known as "pulling a Banjo" or "pulling a Conker") and featured Newman in Car Wash as a means of promotion. In reference to this, Newman's primary objective is to advertise his universe to the people of the Car Wash Dimension. 
As AwdryFan was banned from MarioBoards, he was unable to feature Newman in Megacomic on that site, making Car Wash the only series on MarioBoards where Newman appears.
Megacomic would later pick up on ZeldaDungeon's forum, however that went on hiatus due to AwdryFan's evidently short attention span. Newman appeared in Boo's Pizza and a few other RPs before AwdryFan left ZeldaDungeon. AwdryFan has spent several months developing Megacomic and Newman's involvement, and it's coming, I promise!