Abby Young also known as Super Pretty BLOR is one of the main characters in the Lost on the Road/The Outsiders Franchise.
Super Pretty BLOR while evil, is also, very smart. And was a scientist once. She later quits, as her grandmother had envisioned her, of being, on the Dark Side, and for her to betray her best friend. And becomes evil. Making Super T no longer trust her. And fired her from the Hero League.
Abby Young is camera shy meaning she doesn't like being filmed. Abby Young has trouble breathing, most of the time. Which, is what, Super T discovered, later on. And uses it to her advantage. Later killing her, but only off screen.
60 Years after her death, Super T doesn't turn evil, as originally envisioned.