Guest Stars Dana Carvey voices Leonard Smith John Oliver voices Dr. Xenon Bloom Co Starring Dan Benson voices Ethan Patricia Lentz voices Joyce Smith Dan Harmon voices Alejandro Gary Anthony Williams voices News Anchor Gary Anthony Williams voices Poncho Echo Kellum voices Jacob Echo Kellum voices Eric McMahan Jess Harnell voices Ruben Ridley Jess Harnell voices Roger Rob Schrab voices Alexander Rob Schrab voices Tom Randolph Jackie Buscarino voices Annie Jackie Buscarino voices Train Announcement