Spoiler alert! This story contains details from "The Masked Singer" Season 1, Episode 8, including the identity of the eliminated celebrity. "The Masked Singer" semifinals are here!

For the first time ever, Fox's hit show revealed two celebrities during Wednesday's episode as the final five competitors – Peacock, Monster, Bee, Rabbit and Lion – put on their best performances.

Peacock kicked off the show with a lively rendition of Calvin Harris and Ne-Yo’s "Let's Go." Jenny McCarthy said he's "going to make it to the end." Robin Thicke agreed, adding that the masked singer "really brought the crowd alive." Peacock revealed that he sampled Thicke's "Blurred Lines" on one of his albums, prompting Thicke to instantly guess "Weird Al" Yankovic. Peacock also let it slip that he knows Nicole Scherzinger, who guessed Neil Patrick Harris.

"Deep down, who are you?" host Nick Cannon asked. Peacock replied: "I have dedicated my life to show business."

Last week: Ricki Lake on 'Masked Singer': 'The hardest part has been keeping my mouth shut'

Peacock on "The Masked Singer." (Photo11: Michael Becker/Fox)

Next up was Monster, who slowed things down with Sam Smith’s "Stay With Me." His soulful vocals brought tears to Scherzinger’s eyes. "Your voice just cut through your soul. …This is one of my favorite memories on this show." Her guess: CeeLo Green. Thicke called the masked singer's voice "Grammy Award-winning," before guessing ex-Hootie & the Blowfish member Darius Rucker. Ken Jeong thinks the monster is the "frontrunner" to win the competition. His hunch? Jamie Foxx.

As for Monster’s hint about his identity: "I’m a father, a husband, a son, a brother and more than anything, I’m a person."

Lion brought the house down with Stevie Wonder’s "Don't You Worry 'bout a Thing." "This is someone big, a huge star who knows how to sing," McCarthy exclaimed. Lion said she's "independent" and "loyal," prompting guest judge Kenan Thompson to guess Destiny's Child member Kelly Rowland. Thicke picked another member in the girl group, Michelle Williams.

Lion's identity hint: "I am an advocate, not a victim, even though I’ve been bullied."

Lion (Photo11: Michael Becker/FOX)

Rabbit kept things hopping with a performance of the Temptations' "I Got Sunshine." Before taking the stage, Thompson guessed Nick Lachey after the masked singer dropped a "chicken of the seas" reference from the reality show "Newlyweds: Nick and Jessica." McCarthy thinks it's her husband, New Kids on the Block member Donnie Wahlberg, while Scherzinger thinks it's another boy band singer: 'N Sync's Joey Fatone.

Rabbit's identity hint: "I have done some work in a costume before in different places."

Rabbit (Photo11: Michael Becker, Fox)

Bee created an unforgettable buzz with a rendition of Aretha Franklin’s "(You Make Me Feel Like) A Natural Woman," after revealing she has the "recipe for success." McCarthy said the singer is "a living legend." Thompson said he's "1,000 percent" sure who the singer is. "Who in their right mind doesn’t know … Gladys Knight," he said, adding that she owns a restaurant. Thicke agreed, "I have been saying that every episode." Jeong thinks it could be Anita Baker, while Scherzinger guessed singer and cookbook author Patti LaBelle.

Bee's identity hint: "I'm a people person."

In the end, Lion was sent packing first. The judges final guesses? McCarthy and Thompson picked Kelly Rowland, Scherzinger selected Hailee Steinfeld, Jeong thought Dawn Robinson from En Vogue and Thicke picked Michelle Williams.

When the mask comes off it's … drum roll please … Rumer Willis, the daughter of Bruce Willis and Demi Moore. The actress revealed that she signed on for the show because "I wanted everyone to know I can sing, too." Jeong admitted the judges were "way off."

But the panel did redeem themselves on the next reveal after the rabbit was ordered to unmask. For final guesses, McCarthy picked Wahlberg, Scherzinger and Thicke selected Fatone, Jeong picked fellow 'N Sync member Kevin Richardson and Thompson guessed Lachey.

Turns out Scherzinger and Thicke were right. The rabbit was Fatone.

"What the (expletive) am I doing here? … This is some crazy (expletive)," Fatone said after ripping off the rabbit mask. He admitted that the show and his furry strait-jacket costume helped him overcome his claustrophobia.

Willis and Fatone join unmasked singers La Toya Jackson (Alien) ; talk-show host Ricki Lake (Raven); actress Tori Spelling (Unicorn); comedian Margaret Cho (Poodle); former NFL quarterback and Fox Sports commentator Terry Bradshaw (Deer); comedian Tommy Chong (Pineapple); and Pittsburgh Steelers receiver Antonio Brown (Hippo).

"The Masked Singer" moves into the finals next week, where Peacock, Monster and Bee will battle it out for the coveted title.

Related: 'The Masked Singer' recap: You will never guess which celebrity is the Alien

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The Fox series "The Masked Singer" creates elaborate costumes to hide the identities of singers from judges Robin Thicke, Jenny McCarthy, Ken Jeong and Nicole Scherzinger. Check out just how far some of the acts are willing to go to hide their identity and who's already been eliminated and unmasked. Michael Becker, Fox Fullscreen ELIMINATED: Lion Michael Becker, Fox Fullscreen ELIMINATED: Rumor Willis Michael Becker / FOX Fullscreen Peacock Michael Becker, Fox Fullscreen Monster Michael Becker, Fox Fullscreen ELIMINATED: Rabbit Michael Becker, Fox Fullscreen ELIMINATED: Joey Fatone Michael Becker / FOX Fullscreen Bee Michael Becker, Fox Fullscreen ELIMINATED: Alien Michael Becker, Fox Fullscreen ELIMINATED: Singer La Toya Jackson as Alien Michael Becker, Fox Fullscreen ELIMINATED: Raven Michael Becker, Fox Fullscreen ELIMINATED: Talk-show host Ricki Lake Michael Becker/Fox Fullscreen ELIMINIATED: Unicorn Michael Becker, Fox Fullscreen ELIMINATED: Actress Tori Spelling Michael Becker/FOX Fullscreen ELIMINATED: Poodle Michael Becker, Fox Fullscreen ELIMINATED: Comedian Margaret Cho as Poodle Michael Becker / FOX Fullscreen ELIMINATED: Deer Michael Becker, Fox Fullscreen ELIMINATED: Former NFL quarterback Terry Bradshaw as Deer Michael Becker / FOX Fullscreen ELIMINATED: Pineapple Michael Becker, Fox Fullscreen ELIMINATED: Comic Tommy Chong as Pineapple Michael Becker, Fox Fullscreen ELIMINATED: Hippo Michael Becker, Fox Fullscreen ELIMINATED: Football star Antonio Brown as Hippo Michael Becker, FOX Fullscreen Interested in this topic? You may also want to view these photo galleries: Replay 1 of 22 2 of 22 3 of 22 4 of 22 5 of 22 6 of 22 7 of 22 8 of 22 9 of 22 10 of 22 11 of 22 12 of 22 13 of 22 14 of 22 15 of 22 16 of 22 17 of 22 18 of 22 19 of 22 20 of 22 21 of 22 22 of 22 Autoplay Show Thumbnails Show Captions Last Slide Next Slide