“American Horror Story: Hotel” debuts Oct. 7, and as the premiere creeps up, all of the cast members’ characters — including that of Lady Gaga, who will play the owner of the haunted hotel — have finally been revealed.

Co-creators Ryan Murphy and Brad Falchuk, along with the cast, offered up details Friday at FX’s Television Critics Assn. press tour.

Murphy said that the “Hotel” idea was inspired by a surveillance video from a Los Angeles-based hotel that surfaced two years ago. The footage showed a girl in an elevator who was never seen again. “It is called ‘Hotel,’ and it’s set in a hotel,” Murphy said, disclosing that the season will be set in downtown L.A. “We deal with a lot of American horrors, [including] addiction.”

“AHS” vet Sarah Paulson will play an addict whom she describes as “quite dark,” “vile” and “nasty.”

“I think she’s sexy. She’s a drug addict — not that drug addicts are sexy, but this girl happened to be quite sexy,” Paulson added. “She’s unlike anything I’ve done on the show. Really, unlike anything I’ve done anywhere.”

Here are the “American Horror Story: Hotel” character descriptions:

Lady Gaga: The singer plays Elizabeth, a “wealthy social doyenne,” Murphy said, adding that she’s “consumed with art and fashion and people, and she has a nefarious plan that is revealed in the first episode.”

When asked about LGBT storylines in season five, Murphy revealed that Gaga’s character is bisexual. “Lady Gaga plays a character who has relationships with Matt [Bomer] and Angela [Bassett] and Cheyenne [Jackson].”

Sarah Paulson: “I play Sally. I live at the hotel, I hate Iris [Bates] in a rather ancient way for reasons that are revealed quickly. I have a sort of budding relationship with Wes’ [Bentley] character.”

Kathy Bates: “I play Iris…I run the hotel. I have relationships with Matt Bomer and Wes [Bentley]. And I can’t stand [Sarah Paulson’s character]. I don’t know if I get to work with Angela [Bassett]. I hope.”

Matt Bomer: “I play Donovan. I’m closely associated with Ms. Gaga, Ms. Bates and Mr. Wittrock. He has very interesting relationships with relationships with lady folk in his life, and I’ll just leave it at that.”

Angela Bassett: “I’m sexy, have a strong long lasting relationship with Stephanie’s [Lady Gaga] character,” Bassett said, adding that she plays a fabulous actress who doesn’t live at the hotel, but visits often. “I’ll probably be at odds with Donovan [Bomer] — who gets the girl?” she teased of the characters fighting over Gaga.

Finn Wittrock: He will play a male model named Tristan Duffy who is “always looking for the next high, and he finds the biggest high in Lady Gaga. We have a lot to do together. She sees all of me.”

Chloe Sevigny: The “AHS” returning cast member plays Alex Lowell, the wife of Wes Bentley’s character. She is a mother and a doctor. “We are dealing with a great loss in our family and coming to grips with that among other things,” Sevigny teased.

Wes Bentley: He will play a detective who is Sevigny’s character’s husband. The actor said, “I’m investigating some grisly murders which brings me to the hotel.”

Cheyenne Jackson: “I’m playing Drake,” Jackson said, describing him as a fashion icon. “He’s trying to creatively re-establish himself and moves from New York to L.A. He’s a father and a little desperate.”

Denis O’Hare: “I’m playing Liz Taylor, movie icon,” O’Hare said. The character isn’t actually supposed to be Elizabeth Taylor, but rather someone who is inspired by “Butterfield ” and “Cleopatra” and that eye makeup, the actor explained. “I shaved my head for the part — and other body parts. I work in the hotel and the lounge called Blue Parrot Lounge.”

Falchuk said that O’Hare’s character falls into the LGBT arena, too. “I think it dances in a little more this season,” he said of exploring gay and bisexual characters this season. “I think part of the fun of it, I think, is when that stuff happens on screen now on television, it’s less of a thing… It doesn’t feel as special — in a good way.”

“American Horror Story: Hotel” premieres Oct. 7 on FX.