Professor Proton's beloved puppet sidekick Gino The Neutrino was blue with an Italian accent, a moustache, and costume under his lab coat. He is only ever seen in "The Proton Resurgence". Sheldon found Professor Proton online and Leonard and Sheldon decide to hire him for a show for the two of them, although Penny] sits in with them. When he arrives, Sheldon asked him if he had his puppet with them but Arthur says that he hated the puppet. Sheldon pulls out his Gino puppet and says "How could anyone hate (Puts on an Italian accent) Gino the Neutrino" that he bought on eBay for $20. Later in the episode, Mr. Jeffries reveals that the man who controlled the puppet has had sex with his wife.