wanted Patton to return for season five. Oswald Kittner Oswald Kittner (portrayed by Jay Baruchel) is a recurring character on the American television show Numb3rs. A fantasy baseball player who taught himself math, Oswald becomes involved in an FBI investigation conducted by FBI Special Agent Don Eppes (Rob Morrow) and assisted by CalSci mathematician and FBI math consultant Dr. Charlie Eppes (David Krumholtz). Initially a one-time guest appearance, Oswald quickly becomes a fan favorite and reappears in a second episode, in which Charlie attempts to persuade Oswald to enroll at CalSci. Oswald was originally supposed to be a one-time role. For the episode "Hardball", series executive producers/co-creators Nicolas Falacci and Cheryl Heuton created Oswald to represent the geniuses who fail to receive a formal education. For Oswald's educational background, the writers decided that he taught himself math. Heuton and Falacci developed the character of Oswald Kittner for another friend of series regular David Krumholtz. When the friend did not audition, Krumholtz suggested Baruchel for the role. After seeing Baruchel's performance, Heuton and Falacci modified the role to include some humorous lines and add Oswald's voice. Although Oswald was a skateboarder, Baruchel never rode a skateboard and spent some time learning from the stunt coordinator and a skateboarder. When Heuton and Falacci brought back Oswald for "Democracy," they added the characterization of Oswald as a Canadian possibly because, during the filming of "Hardball," they learned of Baruchel's tattoo of the Canadian maple leaf on his chest. Oswald made two appearances, in "Hardball," first airing in the United States on November 10, 2006, and in "Democracy", first airing in the United States on March 9, 2007. In "Hardball," a minor league baseball player collapses during practice, and the FBI is called to investigate. After FBI agents led FBI Special Agent Don Eppes, mathematician and FBI math consultant Dr. Charlie Eppes, and scientists Dr. Larry Fleinhardt (Peter MacNicol) and Dr. Bill Waldie (Bill Nye) discover his sabermetrics equation in both an e-mail sent to the player and on a fantasy baseball web site, Oswald becomes a suspect in the baseball player's death. Oswald has no motive for murder. Oswald is later shot by the real suspect after a discussion with Charlie about Oswald's math skills and is brought to Charlie's house for Oswald's protection. Because of Oswald's math skills, Charlie attempts to persuade Oswald to enroll at CalSci. Oswald also receives two job