He is a sadistic, malevolent and twisted videogame-haunting entity. He originally partnered with Daddy Dearest to monopolize the gaming industry, but it all ended once the latter sealed him within a cartridge of Super Mario Bros. After believing that he benefitted enough from it. 30 years pass and M eventually learns about the Dearest's daughter and son-in-law, Girlfriend and Boyfriend. Desiring revenge against the man who screwed him over, M imprisons the couple in his domain and desires.