The Mysterious Meaning Behind Howard's Alien Pins On The Big Bang Theory

According to Simon Helberg, the alien pins do mean something. He's just not sharing what it is. In an interview with TV Guide, the actor stated that he and wardrobe supervisor Mary Quigley are the only ones who know the true meaning. "It's not a dirty secret, just a juicy one," he hinted. Quigley told The Hollywood Reporter, "That's always on his turtleneck; the color changes and it always matches his outfit. There's a secret reason why he wears it on every episode that nobody knows. He even wears turtlenecks when he's in his silk pajamas."

Helberg's and Quigley's statements have led to many fan theories about Howard's alien pin obsession. On Quora, "The Big Bang Theory" viewer Carey Page suggested the pins are related to Howard's absent father: "Perhaps Howard believed his father was kidnapped by aliens. We already know that Howard believed that Alf, the alien from another sitcom, could bring his father back."

Others aren't looking as deeply into the situation and feel Helberg and Quigley are just pulling fans' legs. On Reddit, u/root_and_stem said, "I think it's just a little personal flair. Much like his collection of belt buckles," while u/justintx added, "I always assumed it was just because he liked space and sci[-]fi and all that jazz."