Ben Barnes has already conquered Narnia — but is he ready for Westworld?

The Prince Caspian actor has joined HBO’s upcoming sci-fi drama, which takes place at a futuristic theme park where robots go nuts and attack the guests.

Per EW.com, Barnes will replace Once Upon a Time‘s Eion Bailey in the role of Logan, a louche bachelor and veteran Westworld guest whose hedonistic romp through the park is motivated by self-indulgence and a desire to help his friend, William.

Bailey, whose casting was reported just one week ago, had to leave Westworld due to a scheduling conflict.

Ready for more of today’s newsy nuggets? Well…

* Legendary entertainer Carol Burnett will receive the Life Achievement Award at the 22nd Annual Screen Actors Guild Awards, airing Saturday, Jan. 30, at 8/7c on TNT and TBS.

* Spike TV’s Tut miniseries debuted on Sunday night to 1.7 million total viewers, the cabler’s largest audience in the 9-to-11 pm time slot in seven years. With replays, Night 1 amassed 2.6 million viewers.

* ABC’s Shark Tank has officially announced that Ashton Kutcher will — as first reported by TVLine — serve as a guest shark this season, as will Troy Carter (Atom Factory, Smashd.co) and venture capitalist Chris Sacca.

* The remaining Season 2 episodes of About a Boy — which was axed from NBC’s lineup in May — are now available on iTunes.