Jeffrey Sinclair was the lead character for Babylon 5's first season. The character, played by Michael O'Hare, was difficult for the average teevee viewer to relate to: he was grim, philosophical, and rather depressed. Series creator J. Michael Straczynzki once referred to the "cloud of doom" hanging over him. The needs of the story coincided nicely with Warner Bros.' desire for a lead actor with a higher profile, so Sinclair was written out (guesting in a couple of later episodes) and replaced by Bruce Boxleitner's Captain Sheridan.