Justice League as Looney Toons
Bugs Bunny - Superman
Lola Bunny - Wonder Woman
Sylvester - Batman
Tweety - Robin
Daffy Duck - Green Arrow
Melissa Loon - Black Canary
Speedy Gonzales- Flash'
Henry Hawk - GL Hal Jordan
Porky - Aquaman
Petunia - Mera
Foghorn J. Leghorn - Hawkman
Miss Prissy Hen - Hawkwoman
Tasmanian Devil - Red Tornado
Marvin the Martian - Martian Manhunter
Elmer Fudd - Lex Luthor
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Teen Titans as Mystery Inc.
Robin (Grayson) - Freddy
Starfire (Kori) - Daphne
Raven (Rachel) - Velma
Cyborg (Vic) - Shaggy
Beastboy (Gar) - Scooby
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Bat Bunch as the Brady Bunch
Bruce Wayne as Mike (Dad)
Dick as Greg
Jason as Peter
Tim as Bobby
Kathy Kane as Carol (Mom)
Barbra as Marcia
Betty as Jan
Stephanie as Cindy
Alfreda as Alice
Ace as Tiger
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or more freaky and kooky...
The Batman Family as The Addam's Family
Batman (Bruce Wayne) - Gomez Addams
Catwoman (Selina Kyle) - Morticia
Robin (Dick Grayson) - Pugsley
Batgirl (Barbara Gordon) - Wednesday
Commissioner Gordon - Uncle Fester
Alfred Pennyworth - Lurch