Fans have unmasked the Lion after listening to the show's latest promo

Eagle-eyed - or eared - fans of Channel 10’s surprise hit The Masked Singer are convinced that they’ve identified the celebrity singer behind the Lion costume after a new teaser for the reality TV show was released on Sunday.

The short clip posted on the show’s Twitter account shows the mysterious Lion taking to the stage to belt out pop star Billie Eilish’s chart-topper, “Bad Guy”.

The king - or queen - of the jungle’s powerful voice appears to impress judges Jackie O and Lindsay Lohan, with the latter getting out of her seat to dance and clap along.

Is Kate Ceberano the Lion?

Viewers think that the 57-second promo has given away the Lion’s identity, with many taking to social media to share their top guess.

Aussie singer Kate Ceberano’s name popped up multiple times in the comments, with one Twitter user wraiting, “Ok. So it’s Kate Ceberano”.

“Gotta be Kate Ceberano. Her voice is so distinct,” added another.

It’s not just the 52-year-old’s vocal talents that have fans talking - she also fits in with some of the Lion’s clues.

“As a young lion, I entered a competition that would change everything,” reads one of the big cat’s clues which ties in with the “Pash” hitmaker’s past win on the TV series Search for a Star in 1981.

However, two other singers - Casey Donovan, 31, and Prinnie Stevens, 38 - could also fit the Lion’s ‘competition’ clue as both starred on season two of Australian Idol in 2004.

Masked Singer spoilers

Despite the show’s extreme security measures, there have already been several spoilers so far.

Immediately after The Masked Singer premiere, the Wolf was seemingly unmasked as Rob ‘Millsy’ Mills.

Then, Olympic Games Opening Ceremony star Nikki Webster emerged as the hot pick for the Alien although she’s keeping mum on the rumours.

Next, The Project’s Waleed Aly was outed as the Robot by none other than former Masked Singer contestant Gretel Killeen live on-air.

And ex-AFL player Brendan Fevola just about confirmed he was taking a turn on the reality TV show dressed as the Rhino.

Is The Masked Singer returning for season two?

There’s little doubt that The Masked Singer is Aussie TV’s surprise hit, raking in over a million eyeballs for both it’s first and second episodes last week.

The local version is based on a reality TV show that originated in South Korea and is marketed as ‘a singing competition with a difference’.

The show features 12 unidentified celebrities who perform in full costume then, once eliminated, ‘unmask’ themselves to the judges, live studio audience and viewers at home afterwards.

Former Big Brother host Gretel Killeen and ex-cricketer Brett Lee were the first and second celebs to be ‘unmasked’ in episode one and two respectively.

The judges on season one of The Masked Singer Australia are Aussie singer and TV personality Dannii Minogue, American actor and Parent Trap star Lindsay Lohan, radio host and funnyman Dave ‘Hughesy’ Hughes and Kyle And Jackie O Show host Jackie O Henderson.

And according to Dannii, the ratings success story is set to return for round two with Channel 10 expected to give season two the green light in the coming days.

“We'd definitely be keen to return', the "All I Wanna Do" singer told NW magazine.

“We've all said we'd be very up for coming back soon and doing another series,” she added.

The Masked Singer airs 7.30 Monday and Tuesday on Channel 10.

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