When Snaptrap threw a bucket of water on The Chameleon (who was in the form of King Mutt), he turned back to normal. As he was turning back to normal, Snaptrap said, "You're melting! Oh, that works on the Wicked Witch of the West." This is reference to the way the villaness died in the 1939 movie.
When The Chameleon was dressed up as a mummy, and "got rid of the curse", he said a lot of random words in relationship to Egypt and mummies. One of the stuff he said was Brendan Fraser. This is reference to the star of the 1999 film.