Board Thread:Questions and Answers/@comment-1038387-20141010091035/@comment-1639863-20141202024833

Yay! You got it! The question was unexpectedly harder than I intended, I suppose. Sorry about that. Here's the explanations:


 * Jeremiah Arkham, as he incorrectly appears in Batman Vol 2 1, is seen fighting for the Arkhamites against Mr. Combustible in Arkham War #2.
 * Roman Sionis is seen front-and-center giving Two-Face a good uppercut in Arkham War #4.
 * In Arkham War #5, Sionis is with the Arkhamites like nothing happened and ingests the Venom with the rest of the villains. He's even on the cover for that issue.
 * In Rogues Rebellion #4, Sionis is again seen, seemingly creating his own faction with his False Face Society. They battle with Clayface and Mr. Freeze, two die-hard Arkham inmates.
 * Last, like I said, Sionis should have sided with the Arkhamites all along because he was a patient back in Detective Comics Vol 2 9, where's he shown to be just as crazy as all the other inmates. That's the same episode where Jeremiah Arkham briefly usurps Sionis (for the first time in the New 52).