Omicron 023

Omicron 023 was a Mesenes scout craft that arrived at the meeting site between Rebels and Dunari to investigate the craft present in the system. Shortly after the Imperator-II star destroyer Corrupter arrived to capture Rebel and Dunari ships but they, however, managed to flee. Omicron 023 itself was destroyed during the scirmish.

Source: Star Wars: X-wing Alliance