Michael Cera as Allan in "Barbie."Warner Bros.In "Barbie," Allan appears as a kind but lonely man who just wants to hang out with the Kens and Barbies.He didn't interact with Midge in the movie. But he was actually the father of her unborn child.Allan, who first hit shelves in 1964, was "Ken's buddy," named for Greta Gerwig's "Barbie" paints a picture of Allan as a kind-hearted but lonely man who is craving attention and just wants to hang out with the Kens and Barbies.But in Mattel lore, Allan was actually married to Midge and had two children with the doll, despite him not interacting with her in the movie.Mattel started manufacturing Midge, introduced as "Barbie's best friend," in 1963.