"Harley Quinn loves fighting crime with her classmates like Wonder Woman, Batgirl, and Supergirl, but she always does it her with own madcap style--and a big mallet! It's no surprise that Harley can't resist getting involved with an upcoming inter-school battle of the bands and a fantastic cosmic carnival that appears only once a year--and this year, it's coming to Earth! But as things get stranger, Harley knows how to get to the bottom of a mystery--and...

Recruited to Super Hero High by Supergirl, intelligent Barbara Gordon trains for her new role as Batgirl alongside some of the most powerful teenagers in the galaxy.

"When the world's honey supply starts to drop and some of her old tech disappears, super student Bumblebee enlists her friends Wonder Woman, Batgirl, Poison Ivy, and Beast Boy to help her find out why"--