From early childhood, Taryn Loy was pushed into becoming a chronic overachiever. She was always trying to outdo others, academically and physically. When her father, a brilliant Bismollian scientist, discovered a way to alter Bismollian physiology so that caloric energy would be processed into super strength, his daughter became his first test subject. The experiment succeeded - in addition to the usual Bismollian matter-eating powers, she now possessed super-strength. Confident in her new abilities, she tried out for an honour she had yet to achieve - membership in the Legion of Super-Heroes. Because of her power's similarity to that of existing member Matter-Eater Lad, however, she was rejected.
She joined up with other rejected potential candidates for membership as part of the Legion of Super-Rejects. Returning with the others to the Legion Headquarters they threw the gauntlet down to battle and prove their superiority to their counterparts. The Rejects were defeated by their counterparts when the Legionnaires used teamwork, a concept that the Rejects failed to consider. Taryn dropped her Calorie Queen identity and returned to Bismoll.
