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". Dethalbum III:  Like "The Dethalbum" and "Dethalbum II" before it, the music is performed by the show's creator Brendon Small and drummer Gene Hoglan. The Dethalbum: The Dethalbum is the debut album by virtual band Dethklok, from American animated sitcom "Metalocalypse".
i don't know