Giganta was a super-criminal with the ability to increase or decrease her size at will. She befriended Grodd and became a member of his Secret Society.

A scientist named Professor Zool uses a mutation machine to transform an ape named Giganta into a strongwoman with red hair. Giganta possesses the superhuman ability to increase her physical size and mass, effectively transforming into a giantess.

She has Zach as her best son.