But watch his arc closely. Zeke doesn’t rejoin the group. He doesn’t get the girl. He doesn’t walk the graduation aisle. In the film’s final, haunting image, Zeke is seen alone in the distance, walking away from the school, still an outsider. He saved them all, and he is still not one of them.
The alien loses because of drugs and paranoia. But the deeper message is bleak: In the war for your soul, the faculty was never on your side. And the only real difference between a student and a host is how long you can remember your own name.
His solution to the alien problem is a quintessential Gen X/Millennial shrug of nihilistic pragmatism: drugs. The film’s most famous plot point—testing who is human by having them snort caffeine-laced "speed"—is both hilarious and profound. The alien’s biology can’t handle the chaotic, unpredictable rush of human neurochemistry. To be human, the film argues, is to be chemically imbalanced. To be calm, focused, and agreeable is to be the monster.