Thong made their debut during the premiere episode, taking to the stage to sing Footloose.
But first, we were treated to a series of clues about who might be under Australia's current favourite mask.
"I'm Thong, I'm familiar, I'm comfortable, and an Aussie icon with a background overseas," Thong began.
They also revealed that they were better known for their work with M&M, that they love a barbie, and a banquet, and fish.
Thong probably has the audience most curious so far, given they were one of the first voted to continue on through the show. We can't wait to find out who Thong is!
A zombie in an ultra-cute air hostess uniform? Colour us intrigued! Before she took to the stage to sing Sweet But Psycho by Ava Max, Zombie revealed a few clues about herself.
"I'm Zombie, and my performances will live forever. I used to feel entitled but I'm not as green as I used to be... or as orange. Would you care for a baked potato?" she asked.
"I'm not wicked but I'm not magical either. I was once upon a time," she continued.
"I'm Zombie and I'd rather die than lose The Masked Singer."
The judging panel was absolutely blown away by Mirrorball's performance of Olivia Newton-John's Xanadu.
While they're desperate to know who is underneath the mask, we at home want to keep listening to her beautiful singing voice!
"I'm Mirrorball, I was born to do what I do and my parents knew it," she revealed.
"But when the spotlight's on me, I don't react. I'm proud and determined, close to grand in fact. Even when everything goes to ashes I go on unharmed," Mirrorball continued.
"When you're in the spotlight you can be grilled by total strangers, that’s something you can bank on. I am the Mirrorball and now is my time to shine."
Who on earth is Mirrorball?
Blowfly took to the stage first, and the judges were unable to decipher whether it was a man or woman singing, making the clues even harder to unpack.
"I'm Blowfly, you know there’s flys like me all over the world but I’m Aussie as. There’s nothing I like more than cruising in a big V8, or maybe a high-five," Blowfly revealed, leaving the judges to wonder if they had a connection to the children's show, Hi-5.
"Blowflies know the highs and the lows. Those days of innocence are behind me and now I am the possessor of much wisdom. For a Blowfly, I don’t take crap from no one and that’s why I’ll win The Masked Singer.”
Rooster took to the stage to sing 24k Magic by Bruno Mars, ultimately leading to some very mixed guesses.
"I am Rooster, and I'm cocky for a reason," we learned.
"Some people see me as untamed, I’m okay with that. Maybe that’s why I’m so close to doing all the dumb things. Family is important to me, privately and publicly, but I don’t like to do a big song and dance about it. As a child, I learned about attitude. It’s kept me out of the darkest places, except once: a place without a chandelier. I’m the Rooster and I’m the boss of this barnyard," he revealed.
We also saw Rooster being fitted for some boxing gloves at an AUSCAR Championship, giving a bodyguard a haircut, and reading a book titled Australia's Favourite Churches. The latter clue led the panel to ask if Rooster was a religious person. He confirmed that "where [he] grew up, [he] was surrounded by religion".
Tiger had everyone swooning with his performance of Feelin' Good by Cy Grant.
Prior to his stellar performance, we saw Tiger playing the piano, adorned with a photo of Chelsea Clinton, a gold ribbon, and the music score for the theme from BMX Bandits.
Tiger was also spotted wearing a tutu, and measuring a chair alongside a circus tent.
"I’m the Tiger, beautiful but powerful and dangerous. Although I am a Tiger, I do have links to lions. Either way, I love nature," he revealed.
"The thunder doesn’t scare me, I just block it from my mind. But I do prefer the sun. I’m comfortable in the jungle, or even a nature strip. I am the Tiger, and I will tear this competition apart."
Who could Tiger be?
A lot of fans think they know who Snapdragon might be, but that hasn't stopped us from looking closely at the clues.
Things that stood out the most from Snapdragon's package included a sign that read "Snapdragons love Jim Carrey", a chandelier, and a weight comparatively lighter to the one being lifted by an accompanying bodyguard.
"I’m Snapdragon and I’ve got the looks and the bite. Snapdragons may not breathe fire, but we are determined. The world of flowers is tough, we compete for our time in the sun but even then, you don’t really see me as I am. That’s why some people call me mysterious. I’m Snapdragon, and it’s time for me to blossom," Snapdragon told us.
"Hi, I’m Popcorn, let’s have some fun! I went from nothing to huge in the blink of an eye, or that’s how it seems to you but there’s a lot of work in being an overnight success," Popcorn told us.
"Wikipedia says Popcorn’s ancestors come from Mexico, I don’t think that’s true but maybe it is because I’ve been in a lot of places. It’s hard to know where home is, if I got stuck on a desert island who would I want to be with? Kylie of course, and Lady Gaga. I’m Popcorn, and I’m here to have fun!"
These bizarre clues were equally unhelpful when compared with the video we saw of Popcorn, which had the shiny mask staning on a desert road, kissing a rubber snake, and beside a roaring tiger. Could he know who's under the Tiger mask?