Specifically, Hitfix is now reporting that Johnathon Schaech (perhaps best remembered for That Thing You Do, and more recently Ray Donovan, Sleepy Hollowand Quantico) will be scarring-up to play Hex.

“A true legends of the Old West, a morally ambiguous gunslinger with a penchant for danger. Surprisingly, he knows a thing or two about time travel and the future, but is at home in the Wild West. He’s been battling outlaws and gangs for awhile now, and advises the team to be extra careful when they arrive in the small town of Salvation.”

http://moviepilot.com/posts/3745356