Omicron was a letter in the Tionese alphabet. Omicron was often used as a call sign for Imperial starships, often transports such as the Delta-class DX-9 stormtrooper transport. Transport Omicron is one such example.
- Star Wars: X-Wing (First appearance)
- Star Wars: TIE Fighter
- Star Wars: X-Wing vs. TIE Fighter
- Star Wars: X-Wing Alliance