Chet Rudolph worked as a bartender and was also an alcoholic himself. At some point in his life, he met Norma Bates and the two eventually married. Chet later convinced Norma to build the Bates Motel as well as a house with it. He made himself at home with the Bates, often making lewd acts towards Norma, which was often encouraged by Norma herself.
At some point during one of his boxing lessons, he punched Norman in the face and continued to tease the young boy. Finally having enough of both of them, Norman served them both iced tea after they both have sex. Unbeknownst to them, the drinks had secretly contained strychnine in it. Once Chet realized he had been poisoned, he started attacking Norman, but was soon rendered powerless due to the poisoning and fell down the stairs to his death.