Possible Clues:

• "Who Framed Roger Rabbit" character
• Loony tag-along
• Bugs or Porky
• Elmer Fudd, e.g.
• One in a cel block
• Porky Pig or Elmer Fudd
• Bugs Bunny or Bullwinkle
• Animation product
• SpongeBob, e.g.
• Any "South Park" character