My Life as a Teenage Robot

S03E15 Infectious Personality

After returning from a mission, Jenny unknowingly brings home a microscopic alien hitchhiker. What begins as subtle shifts in mood soon spirals into full-blown transformations, as her loved ones—friends and family alike—mutate into monstrous versions of themselves. Their personalities erode, replaced by something alien and predatory, while their bodies twist into horrifying shapes. Jenny watches helplessly, realizing she is the unwitting carrier of this contagion, and must race against time to stop the very people she cares about from losing themselves completely.