Batgirl

From the Lego Batman Wiki

Batgirl
Name	Batgirl
Alter Ego	Barbara Gordon
Powers and Abilities	Skilled at martial arts, has several tools like Batarangs
Appearances	Batgirl is in no levels

Batgirl is one of Batman's allies. In Lego Batman: The Video Game, she is able to access Batman's suits and fights well with her fists. She is also James Gordon's niece, Barbara Gordon, later adopted by him after her parents' death in a car accident. She became Batgirl after saving Bruce Wayne's life, from Killer Moth. She then started woking with Batman. She is a lesser noticed ally but still has :Batarangs, a grapple gun and dive roll.