‘Fallout’ Season 2 New Cast & Character Guide

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With the second season of Fallout arriving on Prime Video this December, viewers can expect Lucy MacLean (Ella Purnell), Maximus (Aaron Moten), and the Ghoul (Walton Goggins) to encounter a variety of new characters. The series, based on the popular video game, will continue to follow their journey through the wasteland as they head towards New Vegas.

Season 2 of Fallout will feature some well-known actors joining the cast, playing memorable characters. As Lucy and her group travel west, away from Vault 33, you’ll meet these new faces when the show returns on December 17th, especially as they approach New Vegas.

Justin Theroux as Robert Edwin House


Prime Video

Award-winning actor Justin Theroux, known for his roles in films like Mulholland Drive and the upcoming Beetlejuice 2, will be taking on the role of Robert Edwin House, also known as Mr. House, in Fallout 2. Mr. House is the enigmatic and incredibly powerful CEO of RobCo Industries who secretly controls New Vegas in the year 2281. He’s focused on using his robotics company to ensure humanity’s survival after a nuclear apocalypse. Rafi Silver previously portrayed the character in Season 1.

Mr. House envisions a thriving, post-apocalyptic city in New Vegas and considers himself its leader. When Lucy, Max, and the Ghoul arrive in this ruined version of Las Vegas, they’ll meet Mr. House and those who support his plans. The casting of Justin Theroux is perfect; he’s exceptionally skilled at portraying compelling and larger-than-life villains.

Macaulay Culkin as Unnamed “Crazy-Genius Type”


Prime Video

Macaulay Culkin, best known for Home Alone, will have a significant role in the upcoming season of Fallout. He plays a mysterious, brilliant character, and the trailer shows him violently confronting an armored soldier. Showrunners are intentionally keeping details about his character—including his name—under wraps to surprise fans when the new season premieres in December.

2025 is proving to be a busy year for Macaulay Culkin, with Fallout being his fourth acting role of the year. He also appeared in Running Point and The Second Best Hospital in the Galaxy, and is slated to be in the upcoming Zootopia 2.

Kumail Nanjiani as a Brotherhood of Steel Pilot


Prime Video

Kumail Nanjiani (known for The Big Sick and Stuber) is the latest major actor added to the cast of Fallout 2. While his character’s name hasn’t been revealed, the trailer shows him arriving at an airplane hangar and sarcastically commenting on a potential civil war, saying he ‘must not have gotten his invitation.’ This, combined with his commanding presence, suggests he plays a leader, likely within the Brotherhood of Steel.

Nanjiani, whether portraying a leader from the Brotherhood of Steel or a skilled pilot (as hinted by his leather jacket with wool details), is expected to bring both humor and action to Season 2 of Fallout, which takes place in the Mojave Desert.

Additional New Supporting Players

In addition to big names like Theroux, Culkin, and Nanjiani joining Season 2 of Fallout, we can also expect a few smaller roles to be filled. We don’t yet know who these actors will play, but they’ll be adding to the show’s cast.

  • Rachel Marsh (The Morning Show) as Claudia
  • Jasper Cole (The Family Business) as Gregory
  • Les Brandt (Days of Our Lives) as Sherman
  • Chriselle Almeida (Grey’s Anatomy) as Vault-Tec Project Manager #2
  • Andrea Cañizares-Fernandez (Monster) as Wounded Woman
  • Eric Barragan (Pulse) as Warehouse Scribe #2
  • Henry Noble (Yellowstone) as HUAC Agent
  • John W. Lawson (Boomers) as Town Local
  • Evan Shafran (Nobody Wants This) as Brotherhood Of Steel Officer
  • Aj DeLeon (SEAL Team) as Brotherhood Of Steel Officer

Main Characters Returning for ‘Fallout’ Season 2


Prime Video

Several key characters from Season 1 of Fallout will be back for Season 2, including Lucy MacLean, Cooper Howard (The Ghoul), and Max.

  • Moises Arias (Ender’s Game) as Norm MacLean,Lucy’s younger brother, who was trapped in Vault 31 when Season 1 ended. Knowing he survived, Lucy and Norm’s reunion in New Vegas seems inevitable.
  • Kyle MacLachlan (Blue Velvet) as Hank MacLean,Lucy and Norm’s father, and Overseer of Vault 33. Hank survived at the end of Season 1 and fled to New Vegas in power armor.
  • Xelia Mendes-Jones (The Wheel of Time) as Dane, a Brotherhood of the Steel Scribe known for being the first non-binary member. As one of Max’s only friends, Dane’s role is expected to expand in Season 2.
  • Frances Turner (The Boys) as Barb Howard, Cooper Howard’s wife and a powerful Vault-Tec executive.
  • Johnny Pemberton (The Lowdown) as Thaddeus, a Brotherhood of Steel Squire.
  • Leer Leary (Poker Face) as Davey, Vault 33’s official President.
  • Leslie Uggams (Deadpool) as Betty Pearson, a Vault 33 Councilor and Overseer.
  • Michael Cristofer (Mr. Robot) as Elder Cleric Quintus.

Fallout Season 2 premieres on Prime Video on December 17, 2025.

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2025-11-17 15:37