That's Maul, Folks!  According to Newsarama, the arc focusing on Darth Maul's final showdown with Darth Sidious may be seeing release on paper before the animation - assuming it gets/got finished - shows up.  Numerous unaired episodes of The Clone Wars are supposedly awaiting some sort of release, but while we wait Darth Maul: Son of Dathomir will give us another look at Mother Talzin, Maul, and whatever the heck is next on deck for that insanely fun storyline that started in seasons 4 and 5.

Me, I'm hoping it involves the Fromm Gang.