ITV has revealed its line-up of weird and wonderful characters who will take centre stage on this year's series of The Masked Singer.

The wacky smash hit returned to British screens for a second series on Boxing Day and creators have unveiled the costumes our mystery celebs will be wearing.

Show bosses have also released a series of tantalising clues to see if anyone can guess the stars - who will be dressed as Alien, Sausage, Grandfather Clock and Viking.

Host Joel Dommett returns to front the show with judges Davina McCall, Rita Ora and Jonathan Ross.

This year they are joined by comedian Mo Gilligan who is stepping into the shoes of last year's judge Ken Jeong.

Here, we take a look at each new character and examine the clues - can you guess who they are?

Alien - Sophie Ellis-Bextor

Will the Alien be out of this world?
Will the Alien be out of this world?

Clue: "Who hopes to dazzle earthlings with out of this world performances."

With its Predator-like hair and mask, fans of the show were hoping this celeb did not put on a scary performance and instead had people pleading for them to say "I'll be back".

The blue skin and big eyes gave Alien a more welcoming look than its Hollywood horror counterparts and fans were left scratching their heads until the big reveal.

In Alien's opening VT, there were a number of clues that helped fans guess her identity – and they didn't have to wait long to find out if they were right as Alien was the first to be unmasked.

Sophie Ellis Bextor was the first person unmasked on the show
Sophie Ellis Bextor was the first person unmasked on the show

It was revealed that Alien was singer Sophie Ellis-Bextor – and here's how the clues exposed her identity.

The VT featured a crime scene, which was a reference to her song Murder on the Dancefloor, while a wedding dress was a nod to her music video for Get Over You.

There was a mention of a battle, as Sophie had been an extra in a huge Game of Thrones fight scene.

And there was also a not-so-subtle mention of her album Trip The Light Fantastic.

Sausage

Which tasty celeb is behind the Sausage costume?
Which tasty celeb is behind the Sausage costume?

Clue: 'Who is all wrapped up in a newspaper BUT will Sausage be the talk of the town?'

The giant sausage will hope to be belting out some banging tunes or else risk being told she's had her chips.

A clue to the mystery celeb's true identity could be held in the newspaper cover, but - like most good bangers - she'll be sure to expect a fair old grilling from the judges.

Viewers got more clues in the first episode, with many sharing their assumptions online.

In the VT, viewers saw Sausage at "Billie's Burger Bar", which featured the words "Because We Want To" at the bottom – which was Billie Piper's debut single.

Sausage said they were "a little bit of everything" and described their performances as "something of a balancing act".

On top of that, she said she was a "silly sausage".

Dragon

Will the Dragon turn up the heat?
Will the Dragon turn up the heat?

Clue: 'Is a cutie but, when they open their mouth to sing, can they bring the fire?'

Many viewers will hope this kindly, colourful creature will not just be full of a lot of hot air.

While some may argue they are too green to be on the show, others will say the Dragon deserves to be in their own Game of Thrones.

In their opening VT, Dragon said they "just want to be loved", and the rainbow belly left fans thinking the celebrity could be LGBT.

However they were left confused when the intro showed the character knocking over a dolls' house and finding bundles of cash.

Dragon said they had "two left feet" and wanted to "conduct" themselves better, though also mentioned they weren't usually seen as a big character.

And if the clues weren't confusing enough, the panel was completely split on the character's gender, too.

Seahorse

Will the Seahorse get on swimmingly?
Will the Seahorse get on swimmingly?

Clue: 'Is a beautiful marine creature who will be hoping their singing goes swimmingly'

This singer will hope they can ride of the crest of a wave and make it all the way to the final week.

There won't be much time for horseplay though as the judges will be out in force to find out just who it is lurking beneath the surface.

Viking

Will the Viking battle their way to the top?
Will the Viking battle their way to the top?

Clue: 'Is armed with a sword and wearing a helmet and clearly taking this battle seriously!'

The giant bearded Viking looks set to follow in his ancestors footsteps and bring chaos to Britain - if only for a few weeks this time.

Complete with sword and shield, the big-headed brute could be hiding a real-life action man - or just someone who desperately need a haircut.

Blob

Has the Blob get their eyes on the prize?
Has the Blob get their eyes on the prize?

Clue: 'Has many eyes but will all eyes and ears be on Blob?!'

With four huge eyes and a big, cheesy grin this blob is a million miles away from his horror movie namesake.

But they will be hoping they can seep into our front rooms with a squeeze out some fans.

Let's just hope they are better at singing than Mr Blobby.

Harlequin

Will Harlequin be the Joker or the Ace of the pack?
Will Harlequin be the Joker or the Ace of the pack?

Clue: 'Could be a joker in the pack or a stunning singer'

Wearing a huge gown, this star looks set to be belle of the ball when the fun kicks off later this month.

But show bosses are teasing the dual roles of this particular fancy Harlequin who could bring in the tears - but will be of joy or laughter.

Swan

Will the Swan ruffle feathers?
Will the Swan ruffle feathers?

Clue: 'Will be confidently swanning into town but when swan sings will they ruffle feathers?'

This celeb will be hoping they are not the ugly duckling of the competition and instead ensure they claim a feather in their cap.

Like their graceful animal namesake, Swan will be hoping they look calm above the surface while their working furiously below it.

Swan got everyone talking after her debut performance, with plenty of cryptic clues.

The feathered beauty spoke of "loyalty, strength and independence" while also having the freedom to spread her wings.

She walked through a ballroom and out on to a red carpet, suggesting she could have found fame as a dancer.

Swan also spoke of being "royal" and coming "full circle".

She said her career had been "very honoured".

Bush Baby

The Bush Baby is cute but do they have a sting in their tail?
The Bush Baby is cute but do they have a sting in their tail?

Clue" 'Is an adorable looking cheeky fluffy fella but will the voice match the cute appearance?'

These small animals are known to be nocturnal and fans will be hoping our very own Bush Baby makes every appearance on the show a night to remember.

Could their youthful name be a clue to their true age - or is it a double bluff?

Badger

Will the Badger stand out from the crowd?
Will the Badger stand out from the crowd?

Clue: 'Steps out of the sett but will this badger stand out from the crowd'

Dressed in leather like a biker, this Badger will hope he is on the road to success once the show starts.

Fans will also be looking out to see if this wild beast gives any clues to his identity - or does he follow his notoriously shy namesake and play his cards close to his chest.

It seems even when Badger is revealed viewers may not recognise him, as he spoke about "being hidden" and "anonymous".

He said that he could be surrounded by people on the street and nobody would know who he was.

This left many thinking he could be a member of a band – but not the frontman.

The leather-clad character said he sees things "like a virtual world".

Robin

Will the Robin tweet their way to the top?
Will the Robin tweet their way to the top?

Clue: 'This rockin’ Robin will be hoping to deliver tweet harmonies and show that he’s not just for Christmas but planning to go the distance.'

More Autumnwatch than Batman, this Robin looks set to bring the festive cheer to the show - but will they be the superhero we all need.

Robin definitely got people talking after his first performance, with plenty of clues that left people scratching their heads.

The bird walked past a sign for EastEnders setting Albert Square, and said he was "fast, light on my feet, and ready to go the distance".

He added that "no-one is going to knock this robin off his perch".

In what might have been a nod to Westlife, Robin said he'd been known to "fly without wings".

Grandfather Clock

Vincent Dolman/Bandicoot TV/ITV
Will the Grandfather Clock make it count?

Clue: 'Is the original Tik Tok and will be making every second on stage count.'

A hint to social media but will this person end up making us all look like twits?

Looking like a giant version of a Disney character, this star will be hoping the judges and viewers make their dreams come true.

Broadcast across eight episodes, the panel will be tasked with guessing the identities of 12 celebrities dressed in amazing costumes with subtle hints placed each week.

The first series of The Masked Singer was won by Girls Aloud star Nicola Roberts, who performed as Queen Bee.

It also featured celebrities including comedian Jason Manford, singers Katherine Jenkins, Kelis and Scissor Sisters frontman Jake Shears, as well as EastEnders actress Patsy Palmer.