Adult Swim's 'Childrens Hospital' spinoff (if it can even so be called) 'NTSF: SD: SUV::' will soon premiere its third season on Adult Swim beginning July 25, and as per usual the show has recruited a number of impressive guest stars for the short-form action thriller. Not only will 'The Hangover Part III' star Ed Helms show up to reprise an earlier role he'd played on the series (with a new twist), but so too will 'Arrested Development' star Alia Shawkat and '30 Rock' vet Jack McBrayer join the cast!

Via Entertainment Weekly, we've learned that Helms will reprise his role as injured HR representative Eddie, who has since been transformed against his will into a RoboCop-type officer. Shawkat will make her first appearance on the Adult Swim series as Kove (Kate Mulgrew)'s long-lost daughter abandoned by her mother for being female, while McBrayer will guest as a neighbor of Trent (Paul Scheer)'s, who receives frequent accidental beatings in search of intelligence.

Helms, Shawkat and McBrayer are only part of the star power on board for the season, as 'Doctor Who' and 'Guardians of the Galaxy' star Karen Gillan has joined the 'NTSF: SD: SUV::' cast in the role of Daisy, replacing past series regular Rebecca Romijn.

For those unfamiliar with the series, the existing cast already consists of Paul Scheer ('The League'), Kate Mulgrew ('Star Trek: Voyager'), Brandon Johnson, June Diane Raphael ('Burning Love'), Rob Riggle ('The Daily Show'), Martin Starr ('Party Down') and Peter Serafinowicz ('Star Wars: Episode 1 – The Phantom Menace').

We'll bring you the latest from the 'NTSF: SD: SUV::' at this year's Comic-Con, and don't forget to check out the new season July 25 on Adult Swim!