Psi

Psi was a letter in the Secondary alternate alphabet. Psi was often used as a call sign for Imperial starfighter Flight groups, specifically Assault Gunboats. Assault Gunboat designated Psi 2 is one such example.

Appearances

 * ''Star Wars: X-wing
 * Star Wars: TIE Fighter
 * Star Wars: X-wing vs. TIE Fighter
 * Star Wars: X-wing Alliance