SpongeBob dressed up as Monkey D. Luffy from One Piece, and Patrick Star dressed up as Majin Buu from the Dragon Ball Z series.
SpongeBob Papercraft - Monkey D. Sponge & Buutrick [Download]
Nickelodeon SpongeBob SquarePants Papercraft [Related Posts]
Sandy Cheeks Papercraft
Patick Star Papercraft 2
Yo Gabba Gabba - Brobee Papercraft