MUGEN: Cartoons vs. Video Games Thumbnail by PG2243 on DeviantArt

MFG: One Piece Fighting Adventure - Ultimate Edition

Mr_Nygren's Marvel VS DC-Universe MUGEN mod - ModDB

NEW Mugen Battle Climax HD Ver 4.0

Groove, MUGEN Database

There's a Fighting game Mugen that is very customizable here are the Wrestlers I have added to the Roster some original made or color swaps or head swaps or sprite edits of

Mugen Games Wheel - Game Media - LaunchBox Community Forums

Mugen on PSP

Mugen: Console Edition, Video Games Fanon Wiki

Caiman free games: Street Fighter Mugen by Mugen9s.

Netease's Open-World RPG Project MUGEN Set to Release on Android, PC, and Consoles