Ryan immediately impressed show-runners with his portrayal of Keller, the victim of a military experiment that causes him to experience beast-like transformations. For Ryan, landing a lead role on a primetime US series wasn't high on his agenda having sunk his teeth into Top of the Lake.
The gritty seven-part miniseries, playing on UKTV, has Ryan playing druggie Mark Mitcham.
Ryan was intrigued when the part of Vincent Keller came up, having been a fan of the original late-80s series starring Ron Perlman and Linda Hamilton.
"I'm a very physical actor. I've been trained in physical theatre so the idea of him transforming into the beast and what I could bring to that as an actor was exciting."
But it's Keller's softer side that Ryan believes is significant in setting the series apart from the original.
"He's very intelligent, he has all these books, he writes poetry. There's that romantic side of the beast and I really want to weave that into the role. I think it's a big part of the tone of the show."
Beauty and the Beast screens on Prime on Fridays at 9.30pm; Top of the Lake screens on UKTV on Saturdays at 8.30pm.