Here are links to the IMDb sites for the main and continuing voice actors in the show:

Grim...Greg Eagles http://us.imdb.com/Name?Eagles,+Greg Mandy and Major Doctor Ghastly...Grey DeLisle http://us.imdb.com/Name?DeLisle,+Grey Billy and Billy's Dad (Harold)...Richard Steven Horvitz http://us.imdb.com/Name?Horvitz,+Richard+Steven Hector Con Carne (the brain)...Phil La Marr http://us.imdb.com/Name?LaMarr,+Phil Skarr and Stomach...Armin Shimerman http://us.imdb.com/Name?Shimerman,+Armin Boskov (the bear)...Frank Welker http://us.imdb.com/Name?Welker,+Frank Billy's Mom (Gladys)...Jennifer Hale http://us.imdb.com/Name?Hale,+Jennifer Nergal...David Warner http://us.imdb.com/Name?Warner,+David Cod Commando...Maxwell Atoms, series creator http://us.imdb.com/Name?Atoms,+Maxwell Mandy's Mom and Irwin...Vanessa Marshall http://us.imdb.com/Name?Marshall,+Vanessa Mandy's Dad...Dee Bradley Baker http://us.imdb.com/Name?Baker,+Dee+Bradley Grim's Mother...Candi Milo http://us.imdb.com/Name?Milo,+Candip Hoss Delgado...Diedrich Bader http://us.imdb.com/Name?Bader,+Diedrich

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