Bryan Beller and Antonio Canobbio have both played for the virtual band associated with what Adult Swim show?
Dethalbum III: Dethalbum III is the third full-length album by virtual death metal band Dethklok, from the Adult Swim animated series "Metalocalypse". The Dethalbum:  The album features full length songs from the TV series, as well as previously unreleased tracks. The Dethalbum:  Antonio Canobbio contributed the artwork for the record.
i don't know