| cast |
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| Series Regulars | |||
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| Adam Baldwin | Adam Baldwin as Major John Casey | Bonita Friedericy | Bonita Friedericy as General Diane Beckman |
| Joshua Gomez | Joshua Gomez as Morgan Grimes | Mark Christopher Lawrence | Mark Christopher Lawrence as Big Mike |
| Ryan McPartlin | Ryan McPartlin as Devon "Captain Awesome" Woodcomb | Sarah Lancaster | Sarah Lancaster as Ellie Bartowski |
| Scott Krinsky | Scott Krinsky as Jeff Barnes | Vik Sahay | Vik Sahay as Lester Patel |
| Yvonne Strahovski | Yvonne Strahovski as Sarah Walker | Zachary Levi | Zachary Levi as Chuck Bartowski |
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| Recurring & Guests | |||
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| Brandon Routh | Brandon Routh as Daniel Shaw | CS Lee | CS Lee as Harry Tang |
| Lauren Cohan | Lauren Cohan as Vivian Volkoff | Linda Hamilton | Linda Hamilton as Mary Bartowski |
| Matt Bomer | Matt Bomer as Bryce Larkin | Scott Bakula | Scott Bakula as Steve Bartowski |
| Timothy Dalton | Timothy Dalton as Alexei Volkoff | Tony Hale | Tony Hale as Emmett Milbarge |
| Tony Todd | Tony Todd as CIA Director Graham | | |