Batman: The Brave and the Bold TV series

Dork Note:  It is absolutely obvious the people who work on Batman: The Brave and the Bold not only love the Batman mythos, but the DC-verse as well. The Aquaman episodes are pure gold! 

Look at this character list - that's some serious character design!

Diedrich Bader
Batman
Kilowog
Ace
Owlman
Solomon Grundy
Punch
Gorilla Boss
Adult Damian/Future Batman
Lord Death Man
Creepy Usher
Caveman Batman
Pirate Batman
Batmanicus
Robot Batman
Musketeer

Corey Burton 
Red Tornado
Silver Cyclone
Thomas Wayne (in "Invasion of the Secret Santas")
False-Face
Doctor Mid-Nite
Dr. William Milton Magnus
Mercury
Chancellor Gor-Zonn
General Zahl
Killer Moth
Batman (Bat-Manga version)
Joker (Scooby-Doo version)
Green Lantern/Alan Scott

John DiMaggio
Aquaman
Gorilla Grodd
Tiger Soldier
Typhon
Enemy Ace
Ubu
Faceless Hunter
Black Adam
Black Mask
Tattoo
Pharaoh
Toyman
Vigilante
Hellgrammite
Mr. Freeze
Legionnaire
Captain Boomerang
Owen
 
Tom Kenny
Plastic Man
Baby Face
Ray
Deadshot
Mirror Master
'Mazing Man

James Arnold Taylor
Green Arrow
Blue Bowman
Green Lantern/Guy Gardner
Major Disaster
Wotan
Nabu
Mark Desmond
Arges
Leslie "Rocky" Davis
Alpha-Red
G.I. Robot
Jace

Greg Ellis
Gentleman Ghost
Doctor Fate
Cavalier
Dr. Canus
Hawk
Thomas Wayne (in "Dawn of the Deadman!")
Shrapnel
Mr. Mind
Big Headed Batman

Will Friedle
Blue Beetle/Jaime Reyes
Scarlet Scarab
Lazy Eye

Jim Piddock
Calendar Man/Calendar King
Doctor Watson
Doctor Sivana
Shazam
Thaddeus Jr.

Armin Shimerman
Calculator
Psycho-Pirate
Walter Mark "Prof" Haley
Guardians of the Universe

Gary Anthony Williams
Fun Haus
Mongul
Mongal

J.K. Simmons
Guardians of the Universe
Evil Star
Kyle "Ace" Morgan

Stephen Root
Penguin
Woozy Winks
Planet Master
Killer Croc

Kevin Conroy
Batman of Zur-En-Arrh
Phantom Stranger
 
Michael Dorn
Bane
Kru'll the Eternal
 
Ioan Gruffudd
Blue Beetle Scarab
Matthew "Red" Ryan
 
Vicki Lewis
Wonder Woman
Star Sapphire
 
Richard Moll
Lew Moxon
Two-Face 

Peter Woodward
Caesar
Ra's al Ghul

Michael-Leon Wooley
Kalibak
Darkseid 

Wade Williams
Mantis
Supreme Chairman of Qward

Thomas F. Wilson
Sportsmaster
Catman

Hunter Parrish
Kid Flash
Geo-Force

Phil Morris
Fox
Jonah Hex 

Carl Lumbly
Tornado Champion
Tornado Tyrant

Gabrielle Carteris
Vicki Vale
Princess Laethwen

Adam West – Batman 
Patrick Cavanaugh – Damian Wayne/Robin
Mindy Cohn – Velma Dinkley
Jeffrey Combs – Kite Man
Tim Conway – Weeper
Olivia d'Abo – Elasti-Girl
Diane Delano – Big Barda
Dana Delany – Vilsi Vaylar
R. Lee Ermey – Wildcat
Oded Fehr – Equinox
Ellen Greene – Mrs. Manface
Mark Hamill – The Spectre
Neil Patrick Harris – Music Meister
Tippi Hedren – Hippolyta
John Michael Higgins – Riddler
William Katt – Hawkman
Wallace Langham – Ocean Master
Loren Lester – Green Lantern/Hal Jordan
Matthew Lillard – Shaggy Rogers
Tim Matheson – Jarvis Kord
David McCallum – Merlin
Ted McGinley – "Aquaman 2"
Andy Milder – Flash/Jay Garrick
Laraine Newman – Ms. Minerva
Julie Newmar – Martha Wayne (2nd voice)
Gary Owens – Space Ghost
Ron Perlman – Doctor Double X
James Remar – Two-Face
Paul Reubens – Bat-Mite
Henry Rollins – Robotman
Jeffrey Ross – Himself
Michael Rosenbaum – Deadman
Peter Scolari – Atom/Ray Palmer
Tom Everett Scott – Booster Gold
John Wesley Shipp – Professor Zoom 
Cree Summer – Vixen
Jeffrey Tambor – Crazy Quilt
Tony Todd – Astaroth
Alan Tudyk – Flash/Barry Allen
Michael T. Weiss – Adam Strange
Wil Wheaton – Blue Beetle/Ted Kord
Michael Jai White – Tattooed Man 
Tyler James Williams – Firestorm
Henry Winkler – Ambush Bug
"Weird Al" Yankovic – Mr. Star