Special Guest Stars Misha Collins as Castiel Guest Stars Mark Sheppard as Crowley Jim Beaver as Bobby Singer Osric Chau as Kevin Tran Rachel Miner as Meg Masters James Patrick Stuart as Dick Roman Larissa Gomes as Louise Co Starring Olivia Cheng as Susan Brendan Penny as Demon Niki Wipf as Polly Robert Lawrenson as Leviathan Lab Tech James Kot as Leviathan Brad Robertson as Demon #1