Arrow fans got their first look at Season 4's main villain Damien Darhk (Neal McDonough) in the season premiere episode Green Arrow last week. While we wait to see what this nefarious character has in store for Oliver (Stephen Amell) and Team Arrow in tomorrow's episode, The Candidate, Neal McDonough confirmed in an interview with that his character will also be crossing over to both The Flash and the midseason show DC's Legends of Tomorrow.

"You go back to the League -- I did an episode of Legends last week -- and I look exactly the same in 1975 but you see he's not as confident and doesn't have such an agenda forty years ago as he does now. So it's fun to play the different times, you know? Going back in time with Legends, and The Flash, with The Flash, I'm just this crazy, fun, enjoy-everything-while-I-kill-everybody type of character. It's just nuts."
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We know that DC's Legends of Tomorrow will have elements of time travel, and as we saw in the season premiere of Arrow, Damien Darhk possesses magical qualities, and he is actually hundreds of years old. It's likely this mystic quality will allow Damien to look the same back in 1975, as he does in present day. The actor also hinted that he may have some sort of connection with DC's Legends of Tomorrow villain Vandal Savage (Casper Crump).

"I'm enjoying the power that I have because it's my time. It's not Savage's time, it's not Ra's al Ghul's time, it's Damien Darhk's time."

There have already been several announced crossovers between Arrow, The Flash and DC's Legends of Tomorrow. Caity Lotz will return as Sara Lance, who will be resurrected as the White Canary on an upcoming Arrow episode, before moving over to DC's Legends of Tomorrow. It is believed that this resurrection will take place in the same episode that Matt Ryan will guest star in as John Constantine. DC's Legends of Tomorrow stars Falk Hentschel (Hawkman) and Casper Crump (Vandall Savage) are also set to appear on both Arrow and The Flash at some point before the midseason show debuts.

DC's Legends of Tomorrow isn't slated to debut until next spring, and it isn't known when we'll see Damien Darhk appear in The Flash as well. It seems possible that all of the main heroes and villains from Arrow, The Flash and DC's Legends of Tomorrow will be popping in and out of each show throughout this season, but we'll have to wait and see. Are you looking forward to Damien Darhk's appearances on DC's Legends of Tomorrow and The Flash?