Teela Spuunvll hails from her native homeworld of Abaddonus. She has the ability to absorb energy and change it from one form into another, for example sound to light and gamma rays to electricity. She was rejected from the Legion of Super-Heroes
because her powers only work if she can have energy available for her to becom dangerous. Otherwise, she is vulernarble to somebody like Turtle, who can just punch her.
The Legion had an idea for Sizzle, Turtle
and Night Girl
to become the charter members of the new auxiliary organization called the Legion Reserves