Fan Casting "The Assassin" in Batman: Sinister Seduction

After Poison Ivy, Deathstroke, and Hush are taken to Arkham Asylum, we cut to the living room of what once was the home of the Clayde family, now the mansion of Roman Sionis. We see Sionis holding a bat in his hand, and releases it into a cage with a cat and a robin. Smiling with tears in his eyes, Roman says: "At last, my game will begin..." Before turning to a man wearing black, red, and gold armor, as well as a white mask, except for a glowing-red eyelense. "Floyd, if you don't mind, would you be so kind as to take the Gordon family and bring them to me?" The assassin nods, before leaving Sionis's office in Clayde Manor.