Negative qualities such as greed, self-serving ambition, monomania, vanity, hypocrisy, and cruelty are heightened almost to the point of parody -- most characters who embody these qualities suffer consequences for their behavior. Loyalty, bravery, and the idea that heroes exist in real life.
Frequent, unrelenting action movie violence. Upon landing on a mysterious island, one of the lead characters is attacked and bitten by a feral child. Another character dies when a long spear is thrown at him and impales him. Characters do battle with dinosaurs, giant piranhas, assorted large bugs and primordial creatures, as well as King Kong. Characters are eaten, stomped, thrown, and swallowed to death. Characters use machine guns, pistols, swords, and hurled jugs of chloroform to do battle with King Kong and the other strange creatures of Skull Island. Later, in New York, they battle King Kong with machine guns and warplanes. Some demonic imagery -- the native tribe of Skull Island act and look like zombies, especially in the eyes.
A couple kisses. Ann runs around in her slip on Skull Island. Reference to "boobies." Scene outside of a burlesque show advertising topless dancers.