Batman: The Widening Gyre

Metamorpho

Rex Mason

Mr. Freeze

Victor Fries

Katana

Tatsu Yamashiro, from DC

Deadshot

Floyd Lawton

The Mad Hatter

Jervis Tetch, DC

Black Manta

David Hyde, Aquaman villain

Changeling

Garfield Logan

Geo-Force

Brion Markov

Halo

Violet Harper / Gabrielle Doe

The Toyman

Winslow Schott, DC

Killer Moth

Drury Walker / Cameron van Cleer

Ocean Master

Orm Marius

Tweedledum

Dumfree Tweed, from Batman

Calendar Man

Julian Day

Etrigan the Demon

Jason Blood

Black Spider

DC, Eric Needham

Doctor Phosphorus

Dr. Alex Sartorius

Kite Man

Charles Brown

Crazy Quilt

Paul Dekker, enemy of Batman and Robin

Monk

Lieutenant Colonel Andrew Blodgett Mayfair, from Doc Savage

Mortimer Drake

DC, the original Cavalier

Silver St. Cloud

Windfall

Wendy Jones, of The Masters of Disaster

Baron Blitzkrieg

DC, World War II German villain

Shakedown

of The Masters of Disaster

Onomatopoeia

from DC

New-Wave

Becky Jones, of The Masters of Disaster

Cornelius Stirk

from Batman

Heatstroke

Joanne, of The Masters of Disaster

Baron Bedlam

Frederick DeLamb, the original

Mr. Polka-Dot

Abner Krill

Captain Stingaree

Karl Courtney / Karl Crossman