Inquisitor

I'm pretty sure the cover art for WoK was taken from a scene in the book where Dalinar saves Bridge Four from some Parshendi archers. WoK hardback p. 876 "Parshendi fell before the sweeping Blade of the Shardbearer, some toppling into the chasm, others scrambling back. The rest died with burned-out eyes. In seconds, the squad of fifty archers had been reduced to corpses. The Shardbearer's honor guard caught up with him. He turned, armor seeming to glow as he raised his Blade in a salute of respect toward the bridgemen. Then he charged off in another direction." The color of Dalinar's cloak is wrong, but it seems like the art was more inspired by the scene than depicting it accurately. Kaladin didn't have a spear because he was still a bridgeman at that point, but the person in the background is obviously holding a spear. I don't recall Dalinar or Eshonai picking up a spear in WoK, so I think it's safe to say that it's Kaladin in the background.