You've watched Celebrity Traitors star Sebastian Croft in huge shows before and never realised

Celebrity Traitors has officially kicked off its second season with a bang, with almost nine million people watching the first episode of season two.

Whether it be Richard E Grant declaring himself a traitor on the very first night before he even took the vow, Ross Kemp’s already iconic paranoia, or the cliffhanger choice between James Acaster and Amol Rajan, the BBC show has kicked off in great fashion.

When watching Celebrity Traitors however it is standard that most people won’t know one or two of the cast since the series is cast to ensure there is as wide an array of stars as possible.

For many who didn’t watch the actor in Netflix’s Heartstopper there is an argument that Sebastian Croft is one of the lesser known names on Celebrity Traitors season two, however the majority of people will have actually watched him in some pretty major series and films and never realised.

Before appearing in Heartstopper Sebastian Croft played an iconic character in Game of Thrones

Bella Ramsey may be the more well-known Game of Thrones star of the pair on Celebrity Traitors but Croft arguably played the more important character on the show.

The now 24-year-old appeared in the HBO series when he was just 14, starring in season six as the young version of Sean Bean’s Ned Stark.

This was his television debut, appearing in two episodes of the show as the iconic character, stating in the past that he had to watch 50 episodes of the show in ten days in order to prepare, binging a box set he borrowed from his brother.

Prior to this he’d appeared in theatrical roles but this was his TV breakthrough, having appeared in one music video and a bit-part role in a mini-series Houdini and Doyle.

His other major TV credits, other than Heartstopper, saw him appear in Dope Girls, but for UK audiences this is not even his most recognisable role that you probably didn’t realise.

Croft starred in the Horrible Histories movie and has spoken about why being on Celebrity Traitors means he has ‘already won’

Yes, if you were staring at Croft trying to figure out where exactly you know him from try picturing him with a Roman helmet on.

This was one of the biggest career leaps he made prior to starring in the first two seasons of Heartstopper, appearing in Horrible Histories: The Movie – Rotten Romans alongside Emilia Jones who would herself go on to star in Best Picture winner CODA.

Croft has spoken in an interview with the BBC about going on Celebrity Traitors about how it’s ‘wonderful’ to be ‘with a bunch of [his] heroes in a castle with Claudia’.

He called it a ‘once in a lifetime opportunity’, adding: “Sometimes you've just got to go; I have this opportunity, and I must do it. It’s so camp and like nothing else. I'm someone who watches and judges other people on what they're doing. It's really scary now it’s me though. It feels like a slight leap of faith.”

Celebrity Traitors returns tonight at 8pm on BBC One.