The M'mannix or Mountain M'mannixis a wild and deadly creature native to Mars. There is virtually nothing known about the creature but comments by J'onn J'onnz indicate that the beast is not sapient despite its humanoid appearance.
A group of seven martian invaders once attempted to invade earth while using the form of the M'mannix, they were successfully stopped by the Martian Manhunter and his sidekick Zook.
- The opening image of the story where these beasts were introduced shows it emitting some sort of flame or projectile attack from its nose, it is unknown if this is an ability of the beasts or the martians who assumed the beasts form. Either way the ability is not portrayed in the comic in any way.
- House of Mystery 171
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