Hulk (also known as The Hulk) is a 2003 American superhero film based on the Marvel Comics character called Hulk, created by Stan Lee and Jack Kirby. Directed by Ang Lee and written by James Schamus, Michael France, and John Turman from a story by Schamus, it stars Eric Bana as Bruce Banner and Hulk, alongside Jennifer Connelly, Sam Elliott, Josh Lucas, and Nick Nolte. The film explores Bruce Banner's origins. After a lab accident involving gamma radiation, he transforms into a giant, green-skinned creature known as the Hulk whenever stressed or emotionally provoked. The United States military pursues him, and he clashes with his biological father, who has dark plans for his son.
David Banner is a genetics researcher for the government trying to improve human DNA. His supervisor, Colonel Thaddeus "Thunderbolt" Ross, forbids human experimentation, so David experiments on himself. His wife, Edith, soon gives birth to their son, Bruce Banner. David realizes Bruce inherited his mutant DNA and attempts to find a cure. After discovering his experiments, Ross shuts down David's research; David rigs Desert Base's gamma reactor to explode as revenge. Believing he is dangerous, David tries to kill Bruce but accidentally murders Edith when she gets between them; the trauma makes Bruce suppress his early childhood memories. Ross arrests and sends David to a mental hospital, putting the 4-year-old Bruce into foster care. Mrs. Krenzler adopts him, and Bruce assumes the surname, growing up believing his birth parents are dead.