Suggested by their name, these enemies are exact clones of the evil wizard Garm, Sumner's young brother. They appear as final enemies encountered in the last level of the Battlefield realm - Garm's Citadel. During the final confrontation against Garm's powerful form, the clones will appear from the ruined stone pieces fallen by Garm himself from taking every damage. Upon death they transformed into demon skulls and launch in a straight line aimlessly.
Similar to the Mini-Genies that appear only in Genie's Sanctum the final level of the Desert Lands realm, Garm's clones were one of the only few enemies to appear in the boss levels only and lacking to appear in ranking types.