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He terrified audiences with his chilling portrayal of domestic abuser Trevor Morgan in EastEnders from 2000 to 2002.
And soap fans got quite a surprise whilst watching Sky Atlantic's Chernobyl on Tuesday night, as Alex Ferns made his debut in the show as grisly crew chief of the miners Glukhov.
Actor - Scene - Character - Crew - Chernobyl
But that wasn't all, as the actor, 50, went fully nude for a scene, when his character and crew stripped off whilst digging underneath the Chernobyl nuclear reactor so that a cooling mechanism could by used to cool it.
The miners decided to work naked because the tunnel had become too hot for them to work with clothes on, after officials banned them from using cooling fans out of fear the radioactive dust would damage their lungs.
Viewers - Nudity - Alex - Character - Engineer
Viewers then witness to full frontal nudity, as Alex's character stepped out to speak with chemical engineer Valery Legasov, (Jared Harris) and Deputy Chairman of the Council of Ministers Boris Shcherbina (Stellan Skarsgard) in the nude.
Alex rose to prominence as the abusive husband of Little Mo Slater in EastEnders, and his terrifying character was abhorred for the physical and psychological trauma he subjected her to.
Character - Demise - Hands - Wife - House
The character met his demise at the hands of his wife when he died in a house fire after he kidnapped and attempted to kill her and his son Sean, who he had by mistress Donna Andrews.
After seeing him on the show's third episode, fans took to Twitter to talk about the actor's unexpected nudity.
Tension - Makeup - Horror - Chernobyl - Episode
One viewer wrote: 'For all the gripping tension, horrific makeup, and foreboding horror of Chernobyl episode 3, the highlight was definitely Trevor from EastEnders wandering about with his c*** out.'
While another joked: 'Caught up with Chernobyl and I never thought I'd see Trevor from EastEnders's p**** but here we are.'
User - Chernobyl - Ep3 - Ca
Another user said: 'Catching up on #Chernobyl Ep3. Can't...
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