The Thief

With the Protopet on the loose, Angela assumed the role of a thief, where she wore a mask integrated with a voice-distorting device and a hooded cape. With this disguise, she stole the Protopet in hopes of obliterating it before it could be mass-produced. Following these events, Abercrombie Fizzwidget, owner of Megacorp, summoned Ratchet and Clank to retrieve the experiment. Once Angela assumed the guise of a thief, she hired Thugs-4-Less for assistance in her ventures to retrieve the Protopet (but was later betrayed by them once they had a better paying employer). After her first encounter with Ratchet, Angela temporarily abducted Clank from his apartment. However, Clank escaped and rejoined Ratchet. Later, on planet Siberius, Ratchet was able to defeat Angela and take hold of the Protopet, returning it to Fizzwidget. Later Angela approached Ratchet on planet Tabora, demanding the experiment, not realizing that Ratchet didn't have it anymore. As the thief, Angela served as the game's main antagonist for the first half of the game, until her true indentity and intentions were revealed, and Qwark was unmasked as the real main antagonist.

Unmasked
As she fell from her ship on Tabora, Angela's mask fell off and her true identity was revealed. She immediately informed Ratchet and Clank that the Protopet may ultimately doom the galaxy and joined the duo in hopes of warning Fizzwidget about the experiment's true potential.

She later sent a Galactic Greeting as a message to Ratchet and Clank, requesting help on her home planet of Grelbin, where the Protopets had begun to infest the facility where she lived.

Angela invented a Helix-O-Morph to control behaviour, when Qwark stole it to control the Protopets himself. After Ratchet defeated the Mutant Protopet, she kissed Ratchet and Clank. She then demutated the Protopet and made it harmless. When she was in Clank's apartment; she told her friends that Qwark started working at Megacorp.