List of DC Comics characters: 0–9
2-D Man
2-D Man is a villain in the Batman Beyond animated series. His powers are elasticity and the ability to be two-dimensional, which means he has a square-shaped body with virtually no curvature to his joints. Therefore, his body has no depth to it, and he resembles a thin piece of paper. His real name is Stewart Lowe, and he is a member of the villainous group The Terrific Trio.
3G4
3G4 is a villain in the DC Universe. He first appears in Aquaman vol. 5, #37 (October 1997). He was created by Peter David and Jim Calafiore.
4-D
4-D first appears in JLA #24 (December 1998) as part of the International Ultramarine Corps.
500Z-Q
500Z-Q, also known as Soozie-Q, first appears in Hero Hotline #1 (April 1989) as part of the Hero Hotline team.
666
#711
#711 is a superhero originally published by Quality Comics, and later DC Comics. He first appears in Police Comics, Vol. 1, #1 (August 1941), written and drawn by George Brenner.
8-Ball
8-Ball is a character appearing in 100 Bullets, published by Vertigo. He first appears in 100 Bullets, #29 (October 2001). He was created by Brian Azzarello and Eduardo Risso.