The mystery of these contestants really got the judges.
 
During the April 26 episode of The Masked Singer, Medusa, Mantis and Gargoyle duked it out for their "Battle of the Saved" night. As for Mantis, he hit the stage to belt out "You Really Got Me" by The Kinks—and the panelists had a few incorrect guesses as to he could be.
 
Judge Robin Thicke guessed it was Dennis Quaid behind the costume and Nicole Scherzinger assumed Mantis was Steve Buscemi. Meanwhile, Jenny McCarthy- Wahlberg said Kevin Bacon as her answer, with Ken Jeong adding that Brendan Fraser was his guess.
 
But Mantis was unveiled to be none other than La Bamba actor Lou Diamond Phillips.
 
"I love Lou Diamond Phillips," Robin said, per Today. "When I was right at that young boy age, two of my favorite movies were La Bamba. My god, that movie had a huge impact on me. I listened to the soundtrack daily. And then Young Guns, that was my thing."

The Young Guns alum revealed that his appearance on the show was all thanks to someone close to home, sharing that the competition series "is my daughter's favorite show."

As for Gargoyle, he hit the stage to sing "DJ Got Us Fallin' in Love" by Usher featuring Pitbull, sharing that "music always gets him in the zone."
 
The show's panelists also took a few guesses with Jenny naming Michael B. Jordan as her assumption. Nicole's answer was Marshawn Lynch and Ken chose Anthony Mackie as his. Though it's worth noting Robin came the closest, guessing that it was Los Angeles Chargers player Joey Bosa.

But instead, under the mask proved to be Los Angeles Chargers wide receiver Keenan Allen. And as the NFL player noted, his attire proved to be one he had to tackle, sharing, "I was more nervous in the mask than without it."

As for Medusa, her mask will remain on for yet another battle.

Keep reading for a closer look at the cast of season 9.

Gnome performed Billie Holiday's "When You're Smiling" on the Feb. 15 episode, but was sadly the first celeb unmasked. He was revealed to be 97-year-old icon Dick Van Dyke.

On the Feb. 15 episode, Mustang belted out Whitesnake's "Here I Go Again" after a clue package that included a soap bucket, barbells, a reference to Elvis and the fact that the celeb has "almost died more times than I can count."

After falling to Medusa in the Battle Royale, Mustang was unmasked as country singer Sara Evans.

Rock Lobster debuted on the Feb. 22 episode with a performance of ABBA's "SOS." His clues included a plushy monster toy, a gavel and the knowledge that he had a history in movies and TV.

After the initial studio audience vote, Rock Lobster was unmasked as Howie Mandel.

Night Owl debuted on the Feb. 22 episode with a rendition of ABBA's "Fernando." Her clue package included an hourglass, Long Island iced teas, a snake and the claim that she helped pave the way for singers like Britney Spears, Christina Aguilera and Nicole Scherzinger.

After falling to Medusa in the Battle Royale, Night Owl was unmasked as pop star Debbie Gibson.

On the March 1 episode, Polar Bear made his debut with a performance of Blondie's "Rapture." His clue package included flowers, a scratch-off lottery ticket, a punching bag and a reference to the Rock & Roll Hall of Fame.

Polar Bear was unmasked as hip-hop pioneer and Rock & Rock Hall of Fame member Grandmaster Flash.

After a March 8 performance of The Doors' "Break on Through" and a clue package including a saxophone, a clock, a ship and references to Andy Garcia, Lady Gaga, Jay-Z and Andy Samberg, Wolf was unmasked as "When A Man Loves a Woman" singer Michael Bolton.

Squirrel made her first appearance on the March 8 episode, performing a rendition of "Try" by Pink. Her clue package included meatballs, a gorilla, a castle and the knowledge that she once made out with Tom Cruise.

On the March 15 episode, a wedding dress was unveiled as a new clue before a performance of "Just the Two of Us" by Grover Washington Jr. and Bill Withers.

After the first round of voting, Squirrel was unmasked as 27 Dresses and Billions star Malin Akerman.

Jackalope made her debut on the March 15 episode with a performance of "Whenever, Wherever" by Shakira. Her clue package included references to social media, a necklace with the letter "G" and the Ghostface mask from Scream.

After falling to The Fairy in the Battle Royale, Jackalope was unmasked as YouTube star, actress and singer Lele Pons.

Axolotl debuted on the March 22 episode with a performance of LeAnn Rimes' "Can't Fight the Moonlight. Her clue package included pom poms, a raw steak, a ring bell and an engagement ring with a musical note on it. 

She was revealed to be WWE superstar Alexa Bliss.

The Fairy made her debut on the March 15 episode with a rendition of "You're No Good" by Linda Ronstadt. Her clue package featured a black panther, a basketball, a rubber duck, a police badge and references to "friends" Sean Penn, Rob Lowe and Emilio Estevez.

On the March 22 episode, Fairy sang Bonnie Raitt's "Angel From Montgomery" and unveiled a new clue: a blackjack hand of 21.

After falling to Macaw in the Battle Royale, Fairy was unmasked as Holly Robinson Peete.

Moose debuted on the March 29 episode with a performance of "The Power of Love" by Huey Lewis and the News. His clue packaged featured a beer glass, hot dogs, a letterman jacket and a stuffed animal bear.

He was unmasked as Cheers star George Wendt.

On the March 29 episode, Scorpio debuted with a performance of "Girls Just Want to Have Fun" by Cyndi Lauper. Scorpio's clue package included sporting equipment, a picture of a beautiful house and a red dress.

She was later unmasked as Selling Sunset star Christine Quinn.

The Doll made his debut on the March 29 episode with a performance of "Don't You (Forget About Me)" by Simple Minds. His clue package included hairspray, a playbill and a dollhouse filled with animals.

On the April 5 episode, The Doll returned with a performance of "Jailhouse Rock" by Elvis Presley. He presented two new clues: a lollipop in the shape of a heart and a guitar case with the words "King Status" written on it. 

The Doll was unmasked as Twisted Sister front man Dee Snider.

Dandelion debuted on the April 5 episode with a performance of "Over the Rainbow" by Judy Garland. Her clue package included a zombie, a piano, a tornado and references to Madonna, Flea and Elton John.

On the April 12 episode, Dandelion sang "Starlight" by Muse and revealed two new clues: a Santa hat with a laughing emoji and the words "space star." She was later unmasked as The Walking Dead and Friday Night Lights actress Alicia Witt.

The Lamp debuted on the April 12 episode with a performance of "Venus" by Bananarama. Her clue package included an energy drink, a yearbook and references to Ryan Reynolds, Mario Lopez and James Van Der Beek.

She was unmasked as Clarissa Explains It All and Sabrina, the Teenage Witch star Melissa Joan Hart.

The five-person California Roll made their debut on the March 1 episode with a performance of Lady Gaga's "Paparazzi."

Their clue package included sunglasses, a tiger, ice cream cones and references to Snoop Dogg and Dolly Parton.

After defeating Medusa in the Battle Royale, California Roll advanced to the quarterfinals.

Medusa sang Billie Eilish's "Happier Than Ever" on the Feb. 15 premiere episode after a clue package that included a picture of Buckingham Palace, a reference to the Super Bowl and the fact that Medusa has "been here before."

She defeated Mustang in the Battle Royale set to "Diamonds" by Rihanna.

On the Feb. 22 episode, Medusa sang ABBA's "Dancing Queen" and unveiled a new clue revealing a connection to Coldplay's Chris Martin. Plus, a bonus clue was brought to the stage after her performance courtesy of Bachelor star Nick Viall: a plane ticket to Tokyo from 1996.

During the March 1 episode, Medusa performed Frank Sinatra's "New York, New York." Her new clues were a Scottish Terrier and a glittery bridge.

Despite falling to California Roll in the Battle Royale, the judges rang the Ding Dong Keep It On Bell to save Medusa and send her to the quarterfinals.

Debuting on the March 8 episode, Gargoyle performed Charlie Puth's "One Call Away" with a clue package featuring a jukebox, an "I Love LA" sticker, a video game controller, hot sauce and a credit card. 

Though he was knocked out of the Battle Royale by Squirrel, Gargoyle lived to see a day after the panel rang the Ding Dong Keep It On Bell. 

Macaw debuted on the March 22 episode with a performance of "Live Like You Were Dying" by Tim McGraw. His clue package included quesadillas, a jar of salsa, dolphins and the knowledge that Macaw has a history of panic attacks.

Mantis hit the stage for his debut performance on the April 5 episode with a rendition of "(I've Got a) Golden Ticket" by Jack Albertson and Peter Ostrum from Willy Wonka and the Chocolate Factory. His clue package included a guitar, a skull, poker chips, cowboy boots and the knowledge that Mantis "almost won an Emmy."

UFO debuted on the April 12 episode with a rendition of Coldplay's "Yellow." Her clue package included a reference to New England, the Golden Gate Bridge, a cemetery, a sewing machine and Queen Victoria. 

The Masked Singer airs Wednesdays at 8 p.m. ET on FOX.