the hulk

The madder the Hulk gets, the larger he becomes. The first time he appears, he is nine feet (2.7 meters) tall, the second time, he is twelve feet (3.6 meters) tall, and the third time, he is fifteen feet (4.5 meters) tall. His skin would also be colored grayish-green in his first appearance, and afterwards remain greenish. The ILM animators thus had to create three distinctly different Hulks.

According to Director Ang Lee, the film's screenplay drew influences from monster tales like King Kong (1933) and Frankenstein (1931); fantasies like Dr. Jekyll and Mr. Hyde, Beauty and the Beast, and Faust; and most particularly Greek mythological tragedies.