Bowser Junior is a member of Team Fortune Street.
Bowser's son. In Birdietalk Productions, Bowser Junior loses the ability to become Shadow Mario, and will instead go into "Big Bad Graffiti Mode" should he use his bandana. Bowser Junior likes to cause mischief, as demonstrated in a comic where he dared someone else to kiss a villainous character.
Along with Patty, Bowser Junior was the first character to win a season of The Challenge.