After Irontail is given the key to the Clock of Spring by Junior, his metal tail is uncovered. But after Jackie tosses him the Spring of Spring, he suddenly has it covered again.
In one shot during Junior's explanation of the Speedshooter, Irontail has no tail, covered or otherwise.
Antoine became a butterfly towards the end of the original TV movie. Yet in this sequel, he is a caterpillar again.
Seymour S. Sassafras had red hair in the original TV movie, yet for some reason he had green hair in this movie.