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A person, usually male, that is loud, arrogant, and ignorant all in one package. (often stated as to be a "mugen")
Dude your sister's boyfriend is such a mugen.
mugen by BW Big Juicy August 31, 2010
unlimited, as in ownage as in ScRiLLz
Mugen by muGEn September 8, 2003
mugen means infinity in japanese
also it means roblox group and that group's current owner, boston is toxic
guy 1: guys i have mugen powers!!
guy 2: mugen is good oriz bad!!!
guy 3: no mugen bad
MUGEN by hhbhlhlhlhlhlhl February 13, 2022
Mugen is a cute guy that makes you gay he is weird guy with a weird name.
Mugen is makes me gay I wish Mugen was gay!!!!!1!
Mugen by MugenIscute March 7, 2022
mugen is dumb group
guy 1: "mugen sooooooooo dumb" guy 2: "NO ITS NOT ORIZ SUCKO!!1"
mugen: are u into-
mugen by hhbhlhlhlhlhlhl March 17, 2022

mugen marco 

a typical guy who only modifies his civic with parts from the jdm tuning company mugen.
mostly owns a yellow or blue honda civic ek4
mugen marco always tells people his car is mugen powered
mugen marco by kiajustin June 2, 2021