It is revealed in the episode "Cloud Nine" that Dad collects Jet Fighter Rides and keeps them in the basement.
The license plate on the Red Guys truck reads "Buns 4 u" in Cloud Nine.
The Red Guy's Role on C&C: Himself
The Red Guy's Role on IMW: King and Queen of England/Redcoats
In the I am Weasel segment "Revolutionary Weasel", there were seven Red Guys on screen at the same time.
In "Cloud Nine" when Chicken uses all of the extention cords when the truck stops he puts a quarter in the machine but where did he get that quarter from, he already put it in the machine earlier and Cow only gave him one quarter. It would be impossible to get it out of the machine.
Red Guy was also The King and Queen of Cheese in the episode with the same name, and the King and Queen of Nopantsland later in the I am Weasel episode "I am Viking".