Shaun is best known for his role as Gerry Roberts in the ITV soap, a character he played between 2017 - 2018.
Gerry was heavily involved with serial killer Lachlan White (Tom Atkinson) as he played his cellmate at Skipdale Young Offenders Institute.
He was later killed at the hands of Lachlan in 2018, in a shocking death scene where he had a brick dropped on his head after being tricked into standing under an unstable building site. But his death wasn't quick either, as Lachlan spent a few moments wondering whether or not he should finish the job, before finally deciding to do it.
Taking to Twitter, fans were quick to point out Shaun, after recognising where they'd seen him before. One viewer led the conversation, writing: "The actor playing the brother is fantastic - he was in #emmerdale right?"
The actor playing the brother is fantastic - he was in #emmerdale right? 👀 #FourLivesJanuary 4, 2022
One replied saying: "Yeah Gerry Roberts in Emmerdale" and another added: "He was Lachlan White's mate and victim in Emmerdale".
Another person noticed him instantly, simply tweeting: "GERRY! #emmerdale #fourlives"
GERRY! 🤗 #emmerdale #fourlivesJanuary 4, 2022
This is one of Shaun Thomas' TV roles since his devastating Emmerdale exit, having also appeared in Ladhood as Tom Cragg.
In an interview with Digital Spy, he said: "It was a shock, because I was only meant to come into the show for two episodes in the prison with Lachlan and I ended up staying for a year and a half, so I really got used to being around everybody and making a connection with everybody. So to be told that was coming to an end was pretty upsetting."
Four Lives has captivated fans as it aired over consecutive nights, with many impressed with Stephen Merchant's eerie performance as killer Stephen Port, as well as Sheridan Smith who plays Anthony and Paul's mum Sarah Sak.
Speaking about creating the new series, writer Neil McKay, said: "Four young men with their entire future ahead of them lost their lives in a brutal and tragic way. This is a story not only of the consequences of that loss but also of the extraordinary courage and resilience shown by those who loved them as they sought truth and justice. It is a privilege to be able to tell it."
Four Lives concludes on BBC1 on Wednesday 5 Jan. at 9pm. Previous episodes are also available on BBC iPlayer.
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Lucy joined the WhatToWatch.com team in 2021, where she writes series guides for must-watch programmes, reviews and the latest TV news. Originally from Northumberland, she graduated from Oxford Brookes University with a degree in Film Studies and moved to London to begin a career writing about entertainment.
She is a Rotten Tomatoes approved film critic and has a huge passion for cinema. She especially loves horror, thriller and anything crime-related. Her favourite TV programmes include Inside No 9, American Horror Story, Stranger Things and Black Mirror but she is also partial to a quiz show or a bit of Say Yes to the Dress!