Britain's Got Talent viewers have been speculating about the possibility of a celebrity being behind the Mr Blobby costume that featured on the show this weekend.
The latest episode of the ITV talent show featured an audition by the iconic character - who first appeared on BBC variety show Noel's House Party back in 1992.
Mr Blobby was seen attempting a magic act, including a card trick, for the judging panel which consists of Simon Cowell, Alesha Dixon, Amanda Holden and Bruno Tonioli.
It concluded with a trick that involved head judge Simon, 63. He was asked to sit inside a 'disappearing box' that was on the stage, as his fellow judges waved goodbye.
The door was subsequently closed but it was teased that the trick hadn't worked as Simon was still inside the box after the door was opened it. Mr Blobby suggested he would try again.
Shortly afterwards though, pink slime was seen falling down onto Simon. The audience and the rest of the judging panel seemed to be in shock as he got covered in slime.
Mr Blobby was given four red buzzers and subsequently left the stage. Simon teased his fellow judges as well as the show's hosts Ant and Dec by offering to hug them.
The audition has prompted speculation about who's underneath the costume, with former Britain's Got More Talent host Stephen Mulhern, 46, having been suggested.
One person wrote in a tweet: "I wouldn't be surprised if that was Stephen Mulhern in the costume". Another who felt similarly said: "[It's the] kind of cheeky thing he would do."
Another viewer wrote: "Bet it's Stephen Mulhern". Whilst a fourth person speculated in a tweet about the show this weekend: "Mr Blobby was Stephen Mulhern I reckon".
Stephen fuelled the speculation himself when he tweeted a gif of a Mr Blobby costume earlier this morning. He wrote alongside the clip of the character: "Blobby, Blobby!!"
His tweet seemingly led some people to consider it confirmation that it was him behind the costume, though the presenter hasn't actually confirmed that it was him.
"I knew it was you," said one person in response to his post. Another commented: "Called it". Whilst a third person responded to Stephen: "I bloody knew it was you".
Some people on the platform continued to speculate in response to his recent tweet, with one person having commented: "Is that a hint it might have been possibly you?"
Other viewers instead teased about the possibility of former judge David Walliams, 51, being behind the costume. He had been on the judging panel from 2012 until last year.
"Is Mr Blobby David Walliams in disguise," tweeted one person this weekend following the audition. "Mr Blobby was definitely David Walliams," another viewer tweeted.
"That's so [David] in the Blobby costume," commented a third. Whilst another person tweeted the comedian and asked him directly: "Is that you in the Blobby suit?"
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