Declaration about the unconquerable nature of the human (Earthling) spirit. Ming keeps his conquered moons under control by encouraging them to fight each other; Flash helps unite some of the captive kingdoms of Mongo to fight against the tyrant.

Combatants are killed unrealistically by ray-gun blasts (from...crossbows?!) and impalements. Hand-to-hand fighting, which sometimes is so hilariously fake that the blows barely connect. Characters stabbed to death (exhibiting a small amount of blood which is blue or green, but never red). Other characters are whipped bloody. Threat of death by gas. Several cyborg-like humanoid baddies dissolve, remove body parts, or have them ripped out.

Ming lusts after Dale Arden and fondles a slave girl. Talk of Ming "making love." Alien girls wear revealing metallic bikinis and skin-tight outfits. Occasional double-entendres are likely to go over the heads of youngsters.

"Damn," "hell," "bastard."

People magazine used as a prop.

Characters drink an intoxicating and evidently enjoyable space beverage. A fleeting joke about being “on the right pills” (apparently in reference to steroids or energy-boosters).