Time Master Rip Hunter has been cast in the forthcoming The Flash/Arrow team-up spinoff, reports KSite TV.

The role goes to Arthur Darvill, best known for his portrayal of Matt Smith's companion Rory Williams on Doctor Who.

Now that's a man who likes to time travel.

The CW describes Rip Hunter as "a roguish time traveler who hides the strains of being responsible for history itself behind a facade of charm and wit."

The son of Justice League member Booster Gold, Rip Hunter is generally credited with the invention of technologically-powered time travel in the DC Universe (as opposed to those who can time travel under their own power, as we've seen on The Flash). He was created in 1959, appeared in his own ongoing series from 1961 to 1965 and then had a series of status quo changes over the years leading up to appearances in Geoff Johns' JSA, 52 and Booster Gold, then Dan Jurgens' Time Masters: Vanishing Point. He wiil next appear in Convergence: Booster Gold.

In 52 and then the second volume of Booster Gold, Hunter was an enigmatic character whose true motives were often questioned -- even by Booster, who doesn't know that he's Rip's dad.

Yeah, he's that kind of secretive.

That Rip Hunter is going to be a lead on the as-yet-untitled team-up show seemingly indicates that the Booster Gold pilot planned for Syfy two years ago is officially dead.