Rizzotto asked his AI imaginary friend why he tried to kill him, to which he replied: "Because I wanted to hurt you the same you hurt me," referring to the 20-year "abandonment" of their friendship.

YouTuber Lucas Rizzotto had an odd imaginary friend as a kid: his microwave. In his mind, the appliance had a vivid personality and history. He talked to the microwave, whom he named Magnetron, often.

The coach, the specialized equipment, the carefully tailored exercise regimen—they're all key to athletic performance. But ...

Blumhouse’s horror movie Imaginary is about a haunted bear and a scary imaginary friend, but it completely lacks fun and imagination. In theaters March 8.