The Full Cast of American Horror Story: Hotel

Lady Gaga is playing the matriarch of the Hotel Cortez, the Countess.

Jackson stars as Will Drake, the hotel's owner.

Bomer is playing Donovan, the Countess's lover.

Bentley is playing Detective John Lowe, who is living at the Hotel Cortez.

Sevigny, who appeared on Asylum, has returned to play Alex, John's wife.

Bates is returning once again to play Iris, Donovan's codependent mother who works at the hotel.

What would American Horror Story be without Sarah Paulson? She's playing Hypodermic Sally.

Peters has a great role this season as the twisted founder of the hotel, Mr. March.

Bassett plays Ramona Royale, the Countess's former lover.

New Girl's Greenfield pops up as Gabriel, a junkie who runs into some bad luck at the Cortez.

Wittrock, who portrayed Dandy on Freak Show, is playing Tristan Duffy, the Countess's new plaything.

O'Hare, also a veteran, is playing Liz Taylor, a transgender woman who lives at the hotel.

Ryan Murphy confirmed to Zap2It that Emma Roberts will return to AHS. He didn't give details on her character, but he revealed exactly when to expect her: "She comes at the end. She comes and she has a great thing with Evan Peters at the end."

Rabe guest-stars on the first Halloween episode as serial killer Aileen Wuornos.

Supermodel Campbell pops up as Claudia, a fashionable New Yorker who is friends with Will Drake.

Criss, with whom Murphy worked on Glee, turns up in the second Halloween episode as a hipster who is really awful to Iris.

Winningham, who appeared as Pepper's sister on Freak Show and Evan Peters' mother on Coven, plays Miss Evers, who works for Mr. March.

Lennon, son of pop star Ashley Parker Angel, stars as Will Drake's son.

Gabel plays Jeffrey Dahmer on the "Devil's Night" episode.

The young star Crooks plays Scarlett, John and Alex's daughter.

Newcomer Henry plays John and Alex's missing son, who has been taken in by the Countess.

Lynch, who played Twisty the Clown on Freak Show, returned to play John Wayne Gacy on the "Devil's Night" episode.

Awkward's Lu shows up as one half of a horrible hipster couple.

Jones, who you may recognize from Narcos, plays a detective who works with John Lowe.

Ruivivar turns up on "Devil's Night" as Richard Ramirez (aka the Night Stalker). Fun fact: Ruivivar also appears on an episode during the first season as Miguel Ramos.

Ross reprised his role of Charles Montgomery, who we meet in the first season.

Alexandra Daddario (True Detective) turns up on the seventh episode as one of Lady Gaga's former lovers who has been trapped in the hotel for decades.