Ersork
From superman.nu: Supermanica
Ersork
A deformed member of the Superboy Revenge Squad, who takes mental control of Pa Kent and forces him to assume the costumed identity of the Mental Emperor. Superboy, after freeing his father and returning him to normal, defeats Ersork by transporting him to a planet that mitigates his deformities and relieves his animosity towards the Boy of Steel. A grateful Ersork thereafter pledges to resign from the Superboy Revenge Squad (SB No. 111/3, Jan 1964: "The Mental Emperor!").