Spoiler alert! This story contains details from the Sept. 30 episode of "The Masked Singer," including the identity of the revealed celebrity contestant.
Group B, the second batch of contestants introduced in the new season of "The Masked Singer," provided a first: an unmasking without an elimination.
The show introduced six new contestants Wednesday, following the costumes introduced in the show's Season 4 premiere last week.
Newcomers Crocodile, Seahorse, Gremlin, Whatchamacallit, Serpent and Baby Alien all made their stage debuts, impressing panelists Ken Jeong, Jenny McCarthy, Nicole Scherzinger and Robin Thicke with their performances. But for one challenger, because of his own decision, it would be his first and final show.
Here's how the evening's history-making episode went.
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Clues: Crocodile revealed that, like his shiny pink stage persona, he is "happiest in water." The star referenced "growing up in Hollywood" and said he was excited to reveal his "hidden talent." Pairing that with his performance of Bon Jovi's "It's My Life" leads us to believe this contestant is celebrated for something other than singing. One of the best parts of his performance? His long pink tail that bopped around as he moved.
Guesses: Jeong delivered the far-fetched guess of "Mad Men" star Jon Hamm. Scherzinger felt her guess was warm with 98 Degrees singer Nick Lachey, while Thicke thought it could be another boy bander, one married to his fellow panelist, McCarthy: Donnie Wahlberg.
Clues: Baby Alien revealed that in his heyday he was "in a theater every week – even beamed onto the Tony Awards stage, baby." His clue package also included allusions to the 1986 Matthew Broderick comedy "Ferris Bueller's Day Off."
Baby Alien is the first "Masked Singer" costume to have a moving mouth, but his performance of George Michael's "Faith" showed his puppeteer skills could use some work. Baby Alien's mouth wasn't exactly in sync with the song's lyrics, though we can't imagine how hard it must be to focus on singing, your stage presence and moving the mouth of an infant extraterrestrial all at once.
Guesses: McCarthy suspected it could be "Cobra Kai" star Ralph Macchio, while Scherzinger thought it could be "Friends" actor David Schwimmer. Jeong got Freddie Prinze Jr. vibes.
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Clues: Seahorse's clue package featured a Western theme, and showed her around a campfire with poodles and teacups. Thicke pointed out a hog with warts, in her package, interpreting it as a reference to Hogwarts, Harry Potter's magical school.
Seahorse said she wanted "to show shiny new sides of myself," leading us to believe she might be a country singer looking to shed her image. Her rendition of Rihanna's "Only Girl (In The World)" revealed her to be the strongest singer so far in the night.
Guesses: McCarthy wondered if the underwater creature could be singer Halsey, and Scherzinger thought of "Pitch Perfect 3" actress Hailee Steinfeld. Thicke threw "I'm a Mess" singer Bebe Rexha into the mix.
Clues: The hair-covered, one-eyed Whatchamacallit said he has been perceived as a shy guy, though he's one of many talents. "I can dance with the stars," he said, "surf candy bars, buzz with the bees and swing from the keys."
Guesses: After hearing Whatchamacallit's version of Skee-Lo's "I Wish," Scherzinger thought of record producer Swizz Beatz. Jeong envisioned basketball player Damian Lillard and Thicke thought the challenger could be musical artist Tyler, the Creator.
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Clues: Serpent let it s-s-slip that he was a mischievous youngster whose dad helped to deter him from a self-destructive path. "I didn't want to cause pain, but heal pain," Serpent said.
His slowed-down rendition of The Proclaimers' "I'm Gonna Be (500 Miles)" was one of the best performances of the night, positioning Serpent as serious competition for Seahorse.
Guesses: McCarthy thought it was possible "Conversations in the Dark" singer John Legend was singing in the darkness of Serpent's mask. Jeong envisioned actor/singer Daveed Diggs and Scherzinger guessed Tony winner Leslie Odom Jr.
Clues: Gremlin's clue package made mention of his "checkered history." He admitted he "can be a bit combative." But the challenger also has a soft spot for animals and enjoys cooking.
His performance of Ben E. King's "Stand By Me" revealed a mature voice – and someone who didn't always play by the rules, the panel would soon find out.
Guesses: Thicke had "Great Balls of Fire" singer Jerry Lee Lewis on his mind, while McCarthy thought of actor Mickey Rourke. Jeong figured former wrestler "Stone Cold" Steve Austin.
The elimination that never was
After their guesses, Gremlin declared, "I want to take this (mask) off right now," causing all sorts of confusion.
"We've lost control! It's the Gremlin show," show host Nick Cannon exclaimed.
And without being eliminated, Rourke, McCarthy's guess, removed his mask and tossed it away.
The panelists erupted in shock.
"I don't know what's happening, ladies and gentlemen," said Cannon. "This is a 'Masked Singer' first ...Mickey said, 'Dammit, it's hot. I'm taking it off.' I love it!"
Gremlin joked that he decided to partake in the show because was simply "in the neighborhood," spurring laughter.
The others in Group B remain, as Gremlin eliminated himself with the reveal.
Episodes of "The Masked Singer" can be watched on Fox's website.
This article originally appeared on USA TODAY: 'The Masked Singer' recap: Gremlin removes mask and eliminates himself