JOKER (14 Feb 2016)
art by George Perez at AMAZING ARIZONA COMIC CON 2016
from Ryan Hicks

JOKER (Jan 2017)
art by George Perez at ALBUQUERQUE COMIC CON 2017
from Tim B

JOKER / LEX LUTHOR (01 Oct 2016)
art by Perez at LAKE COLLECT-A-CON 2016, colors Steve Lydic
from onestopcomic

JOKER (01 Oct 2016)
art by Perez at LAKE COLLECT-A-CON 2016, colors Steve Lydic
from onestopcomic

DUELA DENT (Aug 2016)
art by George Perez

JOKER (Feb 2016)
art by George Perez at AMAZING ARIZONA COMIC CON 2016
from planetawesomecollectibles

BATMAN / JOKER (2014)
art by George Perez
from  plastic_memories

JOKER (2012)
art by George Perez
from Dusty Pitre

JOKER (2012)
art by George Perez
from sellinghopf

JOKER (Jan 2014)
art by George Perez at ALBUQUERQUE COMIC CON 2014
from Triston Pence

JOKER (Jan 2014)
art by Perez at ALBUQUERQUE COMIC CON 2014 
from TheMightyJohn

HARLEQUIN / CARD QUEEN (Duela Dent) (Oct 2013)
art by Perez at NY COMIC-CON 2013
from Jude Deluca

BATMAN VS JOKER (Jul 2013)
art by George Perez at SAN DIEGO COMIC-CON 2013

JOKER (Jun 2013)
art by George Pérez at SUPANOVA 2013 - Perth, Australia
from Ken Koo

SPIDER-MAN VS JOKER (May 2003)
art by Perez at MOTOR CITY COMIC CON 2013    

JOKER (May 2013)
Art by George Pérez at MOTOR CITY COMIC CON 2013 

JOKER (2012)
Art by George Pérez 
From Dan McDonald

JOKER (Apr 2012)
Art by George Pérez at CALGARY COMIC EXPO 2012 
From MIKE SHARPE

JOKER (2012)
Art by George Pérez, colors by Tom Smith 
From Troy Emmi

JOKER (2012)
Art by George Pérez
From Marshall Steinman

JOKER (2012)
Art by George Pérez

JOKER (Dec 2011)
Art by George Pérez
from Paul Greer

JOKER (2012)
art by George Pérez
from MIKE SHARPE

JOKER (Apr 2012)
art by George Pérez at C2E2 2012
from Andrew Risch

JOKER (2012)
art by George Pérez
from Dan McDonald

JOKER (2008)
Art by George Pérez

JOKER (Dec 2011), art by George Pérez for Hero Initiative

JOKER (2009), art by George Pérez, from marshall7145

JOKER (2001), art by George Pérez, from mr.gee123

JOKER (Sep 2010), art by George Pérez at JORNADAS DE CÓMIC 2010, from Juan Luis Gomez

JOKER (2009), art by George Pérez, posted by Jason Lane

JOKER (2003)
Art by George Pérez at LAS VEGAS COMIC-CON 2003
From Jake Bell