David Banner (Nick Nolte): A scientist whose project is halted
by General Ross after he carries out experiments on himself. He later
reappears and tries to manipulate and control his son.
Bruce Banner (Eric Bana): A scientist following in his father's
footsteps; he is carrying out gamma radiation experiments which trigger
the genetic mutations he inherited from his father. The result is the
Hulk.
Betty Ross (Jennifer Connelly): Bruce Banner's ex-girlfriend and
current research assistant.
General "Thunderbolt" Ross (Sam Elliott): Betty's father
and the man responsible for cutting off David Banner's military funding.
Security Guards: Cameo appearances by TV-Series Hulk Lou Ferrigno
and Hulk co-creator Stan Lee
