It's was already known that Vandal Savage would be the primary antagonist in The CW's upcoming "DC's Legends of Tomorrow," and no we've learned who'll bring the immortal villain to life. Actor Casper Crump, primarily known for film and TV roles in his home country of Denmark, will debut as the long-lived villain in "Arrow" and "The Flash" crossover episodes, before shifting to a recurring role in "Legends of Tomorrow."

Here's Warner Bros. TV's official description of the character: "Vandal Savage is immortal, having spent the past 6,000 years moving like a virulent disease through history, whispering in the ears of despots and dictators, all leading to his eventual domination of the world."

Fitting for an immortal villain, Vandal Savage has a very long history in DC Comics. The character first appeared in 1944's "Green Lantern" #10, created by Alfred Bester and Martin Nodell, and has subsequently targeted numerous DC heroes. Though Vandal Savage has appeared in multiple animated productions, this is the character's live-action debut.

Crump is scheduled to appear in 2016's "Tarzan" film, starring Alexander Skarsgård and Margot Robbie, in the role of Captain Kerchover. He's also guested on the Danish show that inspired US TV series "The Killing."

"The Flash" season two is scheduled to debut Oct. 6 on The CW; the "Arrow" fourth season premiere is slated for Oct. 7. "DC's Legends of Tomorrow" will premiere midseason 2016, with a 15-episode run.