In “M3gan,” the titular gadget—a “Model 3 Generative Android” that looks like the lost Olsen sister—teaches a little girl proper bathroom procedure with military rigor while the kid’s guardian occupies herself with more diverting activities. All things considered, some parents might be willing to overlook the cuddly robot’s shortcomings, such as a sarcastic streak and a tendency to commit homicide. “M3gan,” a mildly scary movie built around a valid underlying fear, became a social-media phenomenon months before it was released thanks to the killer dance moves exhibited by its title figure. Bored by the demands of a small child and pressured by her volcanically demanding boss ( Ronny Chieng ) to create a next-level toy, Gemma solves both problems by programming a lifelike ambulatory doll that, learning from feedback, can read emotions and take part in spontaneous conversations exhibiting real emotional intelligence. Within a distressingly short period of time, however, M3gan starts to turn self-aware, posing questions like, “Will I die?”

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