Guest Starring: Johnny Pemberton (Thaddeus), Michael Cristofer (Elder Cleric Quintus), Leslie Uggams (Betty Pearson), Annabel O'Hagan (Stephanie Harper), Xelia Mendes-Jones (Dane), Dave Register (Chet), Rodrigo Luzzi (Reg McPhee), Barbara Eve Harris (Rodriguez), Zach Cherry (Woody Thomas), Dallas Goldtooth (Charles Whiteknife), Jon Gries (Biff), Brian Thompson (Coronado Elder), Sisa Grey (Yosemite Elder), Chris Browning (Grand Canyon Elder), Rachel Marsh (Claudia), Adam Faison (Ronnie McCurtry), Rajat Suresh (Clark), Jeremy Levick (Pete), Ciel Shi (Wenjie)
Co-Starring: Leer Leary (Davey), Herbert Russell (Vault 33 Neighbor #1), Sade Ayodele (Vault 33 Neighbor #2), Guy Heilweil (Perry), Ava Scarola (Lois), Alyssa Riley Ndati (Trudy), Henry Rhoades (Young Aspirant), Tim Soergel (Knight Gnatius), Jonathan Dixon (Raider 3), David Jordan Chen (Vault 33 PA Announcer), Sydney Olson (Executive Assistant)
Stunt Doubles: Colby Lemmo ("Lucy MacLean"), Gee Alexander ("Maximus"), Zack Duhame ("The Ghoul"), Gino Woulard ("Cooper Howard"), Jeremy Fitzgerald ("Thaddeus Power"), Troy Brown ("Charles Whiteknife")
Guest Starring: Sarita Choudhury (Kate Williams / Lee Moldaver), Martha Kelly (Representative Welch), Jon Daly (Snake Oil Salesman), Dale Dickey (Ma June), Rafi Silver (Robert House's Double), Edwin Lee Gibson (Shotgun Jeff), Rachel Marsh (Claudia), Adam Faison (Ronnie McCurtry), Jeremy Levick (Pete), Rajat Suresh (Clark), Tony Robinette (Shopkeep Simon)
And: Justin Theroux (Robert House)
Co-Starring: Edythe Jason (Barv), Jesse Burch (Victor Securitron), Dirk Fenstermacher (Freeside Customer #1), Tamara Perry (Freeside Customer #2), Kirsten Scoles (Partygoer), Kimberly Shannon Murphy (Excited Partygoer), Sydney Olson (Executive Assistant), William Calvert (Galaxy News Announcer), Clay Savage (Lucky 38 Securitron)
Guest Starring: Johnny Pemberton (Thaddeus), Annabel O'Hagan (Stephanie Harper), Dave Register (Chet), Leslie Uggams (Betty Pearson), Martha Kelly (Representative Welch), Clancy Brown (U.S. President), Natasha Henstridge (Joan), Jon Gries (Biff), Jon Daly (Snake Oil Salesman), Adam Faison (Ronnie McCurtry), Rachel Marsh (Claudia), Rajat Suresh (Clark), Jeremy Levick (Pete)
And: Justin Theroux (Robert House)
Co-Starring: Leer Leary (Davey), David Perez Babich (Irv), Derek Anunciation (Freesider #1), John W. Lawson (Freesider #2), Sonia Jackson (Freesider #3), Casey Hendershot (Massive Legionary), Bryant Powell (Canadian Rebel), Ryan Ryusaki (Border Agent), Sydney Olson (Executive Assistant), David Jordan Chen (Vault 33 PA Announcer), Shiloh Williams (Freeside Child in Charge), Elliott Stuart (Freeside Child Hustler), Riley Stuart (Freeside Child Selling Drugs), Scott Lang (Slit Throat Victim)
Stunt Doubles: Ebony De La Haye ("Lucy MacLean"), Jeremy Fitzgerald ("Maximus"), Ryan Sturz ("Hank MacLean"), Zack Duhame ("The Ghoul"), Janelle Burik ("Stephanie Harper"), Kimberly Shannon Murphy ("Joan")