- A mask hides the face, but frees the soul. A mask speaks the truth.
- — Richard Sionis src
Richard Sionis, to the average person, is the owner of a successful financial firm with an office filled with historical masks, his interest. However, Sionis is secretly the operator of an underground fighting arena, forcing some of his employees to fight in an office building against their wills.
When Det. Jim Gordon began to investigate the death of one of the unlucky fighters, his investigations lead him to Sionis, who kept his cool as the officers questioned him. While he investigated further into the case, Sionis captured Gordon and forced him to fight in the arena against the other detainees. Gordon defeated his opponents and was eventually pitted against Sionis himself, wearing a black warrior's mask and wielding a sword. Again, Gordon beat his aggressor and arrested him. 
- 2 Appearances of Richard Sionis (Gotham)
- 3 Images featuring Richard Sionis (Gotham)
- 1 Quotations by or about Richard Sionis (Gotham)
- Character Gallery: Richard Sionis (Gotham)