Monster Girl

In her human state Amanda is slight and small framed, with dark green eyes and long auburn hair usually pulled into a ponytail. Though she is twenty-six, her face looks far younger thanks to the de-aging tied to her powers. The transformation turns her into a hulking, muscular, masculine brute with yellow eyes and pale green skin; her clothing shifts along with her, becoming a simple loincloth and thick bands wound around her limbs that suit the savage form.

As Amanda she can be sharp tongued and sarcastic, yet she is a dependable teammate who carries her share of the load. Nothing sets her off faster than being treated like a kid, an understandable sore spot for a grown woman stuck in a child's body, and she hits back at anyone who does it. Once she shifts into her monster shape, that irritation gives way to something more feral, and she tears into her enemies without mercy or hesitation.

A supernatural curse lets Amanda swap her ordinary body for a far larger and stronger monster form, sharply raising her strength, toughness, and fighting power. In that shape she heals with remarkable speed, shrugging off minor wounds almost instantly, though the limit showed when Battle Beast crushed her skull between two rocks and left her clinging to life until Robot and the GDA found a rare plant, the Cerulean Cosmos, whose molecule boosted her odds of survival. Her monstrous strength let her batter Rex Splode during the Guardians tryouts and trade blows with Battle Beast, and her durability shrugged off Rex's explosives and Kursk's electricity, even if a single punch from Invincible could knock her back to human form. She fights on raw power and animal aggression rather than polish, which overwhelms lesser opponents but leaves her outclassed by truly skilled ones.

Her gravest problem was the curse's side effect: every reversion rebuilt her body with a slight temporal offset, making her a little younger each time until she looked like a preteen. Robot solved it by engineering a belt that banks a digital copy of her cells before she changes, then feeds that data back on her return to cancel the regression. Her magically altered biology is a liability of its own, since it departs so far from normal human function that doctors found her nearly impossible to treat when she was gravely hurt, and foes who match or exceed her strength, such as Battle Beast and the evil variant Gogglesvincible, can still overpower her.