Cartha

Turr Phennir's brother was an Imperial Pilot who was killed in 0 ABY

Biography:
The elder brother of Turr Phennir who was killed during the Battle of Yavin by Wedge Antilles, for this Phennir felt a secret desire for revenge.

Behind the Scenes
It is possible that he and DS-61-4 ("Dark Curse") may have been the same person due to his being killed by Antilles during the Battle of Yavin, but to date no canonical statement has been given to prove this theory correct.