Batman: Arkham - Ranking EVERY Villain Worst To Best

This character is the definition of a mixed bag within the Arkhamverse. One minute he's right in the spotlight; the next, barely even a cameo.

Arkham Origins sets up Roman Sionis's Black Mask as the game's main villain, as he's the one who puts out the bounty on Batman and lures the eight assassins to Gotham City. But as it transpires, Sionis is actually imprisoned, and the one posing as him later turns out to be...yep, the Joker.

With that rather pointless twist out of the way, Batman frees Sionis, and he goes about retaking his criminal empire. In a climactic fight at an Old Gotham church, Sionis is defeated and locked away in Blackgate Prison.

His appearances after that are nothing short of pitiful. First, he's given a meagre cameo in the intro to Arkham City; after that, he shows up in a Robin-exclusive challenge map; and finally, he serves as the 'main antagonist' of Arkham Knight's 10-minute-long Red Hood Story Pack.

What's more, the games keep going between two different looks for him. "Continuity?" the developers must have said. "What's that?"