Shadow Guy and Gamma Gal: Heroes Unite (Disney Club Penguin)By Arie Kaplan
- Author: Arie Kaplan
- Binding: Paperback
- Publisher: Grosset & Dunlap
- Published: 2010-08-26
Shadow Guy and Gamma Gal are two popular superhero penguins that originated in a popular play at Club Penguin's theater, where kids can put on virtual plays. In this hilarious, action-packed graphic novel, readers will find out the never-before-told story of how these two characters gained their powers and came together to become Club Penguin's infamous superhero duo.