Slugs : Their are three types of slug in the netherworld; green, purple and orange. The green slugs are often used in netherworld delicacies (and often eaten while still alive). The orange slugs are used by Betrayus to spy on Pac-World. In "No-Body Knows" Betrayus used a large infestation of slugs to find the repository in the capital building. They seem a little reluctant to do as their told, seeing as one wouldn't listen to Dr. Buttocks when he told it to spy on Sir Cumferance in "Indiana Pac & The Temple of Slime". The purple slugs are underwater.
Pac-Man was one of the first games developed by this new department within Namco. The game was developed primarily by a young employee named Toru Iwatani over the course of 1 year, beginning in April 1979, employing a nine-man team. It was based on the concept of eating, and the original Japanese title is Pakkuman ( パックマン ) , inspired by the Japanese onomatopoeic phrase paku-paku taberu ( パクパク食べる ) ,   where paku-paku describes (the sound of) the mouth movement when widely opened and then closed in succession.