Choose your favorite of these and discuss
I like mad hatter
Here's some others:
Zsasz
Riddler
Killer croc
Manbat
Mad hatter
Harley Quinn
Poison ivy
Catwoman
Solomon Grundy
Clay face
Killer moth
Ra's al ghul
hush
Lady shiva
Firefly
Electrocutioner
Red hood
Lenny
Mr. Freeze
Black mask
Calendar man
scarface
Copperhead
Talia al ghul
Hugo strange
Arkham Knight
Amygdala
Film freak
Maxy Zeus
The eraser
Anarchy
Kite man
Professor pyg
Edit: hmm, not much love for penguin
Edit: this is trending!
Edit: people saying deathstroke not batman villian, he will be removed
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Batman