This article's content is marked as Mature Needlemouse found something very brutal for those with a weak heart. The page SuperMarioLogan Villains contains mature content that may include coarse language, sexual references, and/or graphic images which may be disturbing to some. Mature pages are recommended for those who are 18 years of age and older. If you're 18 years or older or are comfortable with graphic material, you are free to view this page. Otherwise, you should close this page and view another page.

NOTE: This category should only include SML characters who are either fanon or have appeared before SML got a cease-and-desist letter/before the Human Puppet Era. If a character has appeared during the Human Puppet Era/after the cease-and-desist letter (ex: the Huckerdoos, Bott Buddy, CJ Winkle, etc.), then they should be on the Villains Wiki.

Villains or antagonists who appear in a YouTube series called SuperMarioLogan. Almost every single protagonist or hero in the SuperMarioLogan franchise can be occasionally villainous.

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