Intrigue aside, it was good to see Darhk on the show because the character is so damn fun and captivating, superbly played by Neal McDonough. He's incredibly captivating, and even charming despite being completely malevolent. It's only the second episode and we've had a sighting of him, so could we have further appearances in the future? He's around at the same time as our heroes, and Savage, so for as long as they're in 1975 he could turn up. Even if they move to a different time, it's plausible that he could appear, and it might start giving us more answers as to his powers displayed on Arrow.