Rosetta Riley is a reporter who operates as a key member of the supervillain team known as the Celebrity Five, placing her in direct opposition to superheroes and their allies.

She employs specialized DISK technology as her primary method of operation, possessing the unique ability to summon and control animal-type DISKs. She specifically commands the villains King Cobra and Diamondback in combat.

Her activities involve deceptive tactics to acquire DISKs containing other villains or heroes. In one operation, she disguised herself as a blonde masked woman to orchestrate a theft from within a bank, utilizing Diamondback during the heist. She later deployed King Cobra to confront an opposing individual. These actions were conducted alongside her accomplices Tim and MODOK. When her plans are thwarted, she has been shown to retreat from conflict.