Kevin McCallister himself, Macaulay Macaulay Culkin Culkin (yes, that is the actor's legal name, following a poll in 2019), has been confirmed to be joining Amazon's Fallout series. Culkin will apparently "play a crazy genius-type character." The series is headed towards the Mojave Desert next, the setting of Fallout: New Vegas, and filming is said to begin imminently.
Culkin is kind of a dead-ringer for Arcade Gannon, a companion character from that game who fits that description, but that's just speculation on our part. The news comes to us by way of Deadline (thanks, VGC), with Culkin himself confirming the news on Instagram. Best known for his iconic role as Kevin McCallister in the Home Alone series, Culkin was a member of the comedy-rock, anti-folk band The Pizza Underground, which would parody The Velvet Underground's songs by variously altering the lyrics to be about pizza.