Bruce Banner, a genetics researcher with a tragic past, suffers massive radiation exposure in his laboratory that causes him to transform into a raging green monster when he gets angry.
in the opening montage sequence, animals are tested on. jellyfish are injected with needles, a starfish is cut open, a lizard is gassed, a monkey appears visibly distressed.
later, a frog with a cut in its back is hit with gamma rays in an attempt to heal it. the cut heals, but the frog swells up and explodes. very graphic. look away/fast forward after the close-up shots of science equipment
A frog is killed in an experiment early on in the movie. A starfish and a lizard are being sliced up in the opening credits, but it’s not clear if they survive or not
bruce is held by wires in a tank to make him turn into the hulk. he's later trapped in foam. bruce's dad is led away in a straitjacket during his arrest, and later handcuffed in jail.
some really gruesome hand-related body horror when bruce's dad imbues himself with radiation and gets new powers. blood dripping from a cut becomes weirdly congealed. i didn't see many details because i looked away