Deathstroke

Before he appeared in Arkham Origins, I had never seen a depiction of Deathstroke. His boss-fight early in the game was certainly one of the more memorable boss-fights in recent gaming history. His action figure came as part of a 4-pack with Batman, Black Mask, and the Joker, and is pretty clearly the best figure in the pack. He's got great molds to his armor, as well as great paint work. He came with a staff, sword, and 9mm pistol, and also has better articulation than most figures in the DC Collectibles lineup.

 We have not only seen Deathstroke portrayed very well in the Arkham series, but played masterfully by Manu Bennett in Arrow on TV. We'll also reportedly be seeing him as a main antagonist in the upcoming Ben Afleck solo Batman movie in 2018. If he was a relatively obscure character before, he will be very much a part of the main lineup of DC villains for the next several years.