Are you sure that's Wolfram? 0_0 I'm positive that's this other guy that looks a bit like Wolfram...I've seen screencaps of him in the second to last episode, and let me tell you, I don't think he's Wolfram ^-^" (because Yuri meets him in this dark place and comes back out all evil and surprising people, including Wolfram...)
Or...at least that's what I could tell from looking at screencaps. Anyway---it's a really cool pic so thanks a bunch! XD