Bomberman is a character who appears in MM54321's videos and first appeared in Super Mario 64 Bloopers: 101 . He has also appeared in The Return of Bomberman , Ztarragus's Island , and Return to Ztarragus's Island . He also appeared is in OiramOiram12345 and the Dark Star X , where he goes to Ztarragus's Island X with the heroes and fights Celestius X and wins. In IT4D, he visited Bob-omb Battlefield while Mario met his 4D counterpart, the evil Bob-omberman (who turns against Dimentio and joins the heroes) in the 4th Dimension. He also appeared in Time 3: The Last Ztar. In The Moon World, while Bomberman himself did not appear, his Moon World counterpart, Bombermoon, the inventor of Moonogram, appears as a supporting protagonist.
Bomberman is a Hudson soft character, and MarioMario54321 clearly did not make him up.