Erogen

She is an alien who looks like a normal blonde woman who was sent to Earth as a baby to protect humans, who's alien name is Ultimyrra. She pretends to be a shy, nerdy girl with glasses living a normal life named Laura, to hide her real alien identity from everyone. However, during emergencies she becomes a brash, stoic, super hero in a white and gold suit with super strength, flight, super endurance, and other powers named Ultima, who isn't very fond of humans and thinks they're weak. She hides her true alien origins as Ultimyrra along with her powers from everyone. She keeps her real bubbly personality locked away, and doesn't let anyone know she's the hero Ultima, even her family.