Jumbo Koopa is a original character made by Ryuu the Ancient Keyblade Master that appeared in Naruto Crossover 2: Masshuru-mu Muchitsujo. Jumbo Koopa is a fusion of many defeated koopas that was combined by the Xaoc Star Staff that Boswer used on them. He was soon defeated when he was striked by a Oodama Rasengan by Naruto Uzumaki which resulted with Jumbo Koopa turning back into all of the fallen koopas that created it.