The original name for Bugs Bunny's superhero character was going to be Buzz Bunny, but then Buzz Bunny was already trademarked by Dutch freelance designer and then the name was changed to Ace Bunny.
The original name for Wylie E. Coyote's superhero character was going to be Slick but then it was changed to Tech E. Coyote.
The original name for Road Runner's superhero character was going to be Roadster but then it was changed to Rev Runner.
The original name for Daffy Duck's superhero character was going to be Duck but then it was changed to Danger Duck.
The original name for Tazmanian Devil's superhero character was going to be Spaz B. Wilde and then it was changed to Spaz-manian "Spaz" Devil and finally the name was changed to Slam Tasmanian.
After complaints about the original preproduction character models' appearances, including an internet petition of protest that was started by an 11-year-old boy, the producers of the series revised and softened the characters' appearances to make them appear less menacing.