Is the bulge by my Pac-Man's right leg a growth, like a tumor, or is it just part of his growing rounder? It is prodtruding from his body, not his leg.

http://www.noleweb.com/19/00072088.jpg
http://www.noleweb.com/19/00072089.jpg
http://www.noleweb.com/19/00072090.jpg
Image