MarioMario54321 (MM54321, MM and sometimes MarioMario for short) is a popular Super Mario 64 machinimist and blooper-maker who makes appearances in OnyxKing's videos and sometimes rivals with him. MarioMario54321 is friends with Starman3, SMG4, Lilyncookies, and LuigiGame2.
Due to SMG4's decreased focus on including other YouTubers, machinimists and YTR members in his bloopers, MM54321's presence in recent videos of SMG4's are mostly limited to cameos.
MarioMario54321 was first known as Mario64 on Lemmy's Land when he was a child. After getting blocked from it after stealing artwork, he left in despair, many believing he died. However, he later was "reborn" when he joined YouTube, becoming MarioMario54321.
He later met Mario himself and began his life in the Mushroom Kingdom, creating videos and attracting other YouTubers to the Mushroom Kingdom. Eventually, they where invited to the Star World to save it from the entity Mastar, went to Ztarragus's Island with Bomberman to collect Ztars and defeat the Ztar entity who owned the island, returned to the Star World and defeated Mastar again, and later to defeat the now full of anger creator of Star World society and the land, and had many more adventures, two more to the Star World. However, he and his friends had their major enemies, the Doppelgangers. After a long battle, including the takeover of the world, and both them and their enemies unable to die, they defeated the Doppels and MM stabilized the Dark Star X, the source of the Doppel's power and life, and merged him with his counterpart, the Light Star X, into Star X. Later, he helped save the Fourth Dimension from Dimentio and went to fight Novuscurous to save the Star World for the fifth time.
MarioMario54321 made himself a color code with YoshiElectron's generator. He has White overalls, Yellow-orange cap, arms and shirt, Grey gloves, Blue shoes, Yellow face, and Brown hair
This is his color code:
Counterparts and Alternate Forms
The only of MarioMario54321's counterparts to appear in SMG4's bloopers is the well-known dopple OiramOiram12345. MarioMario54321 also has four alternate forms, but, similarly, only OiramOiram12345 X has appeared in SMG4's videos.