Ads keep the MarioWiki independent and free :)
Paper Bowser is the paper counterpart of Bowser that appears in Mario & Luigi: Paper Jam and is one of the main antagonists of the game. Alongside various other paper characters, Paper Bowser came out of a book containing the whole paper world.
Paper Bowser makes his debut as a wholly unique character from Bowser in Mario & Luigi: Paper Jam. He first appears at Bowser's Castle, confronting the real Bowser and getting into a fight with him. Eventually, however, they decide to join forces and kidnap Peach and Paper Peach, subsequently returning to the castle and summoning Petey Piranha to slow Mario, Luigi, and Paper Mario down.
Eventually, the two Bowsers plot to betray the other and imprison them in the book, though not before they trap the Mario Bros. in the book and destroy it. The two merge together into Shiny RoboBowser, only to be defeated. Paper Bowser makes one last attempt to grab the book, but Paper Mario reaches it first, and the trio trap him back inside.