Defender Squadron One, or simply Defender Squadron, was a starfighter squadron in the Galactic Empire's Seventh Fleet. It was made up of twelve TIE/D Defenders and its commander was Captain Vult Skerris until his death during the Lothal campaign, in which Skerris used a TIE/D Defender Elite. Captain Benj Dobbs led the squadron after the death of Captain Skerris.
- Thrawn: Alliances (First appearance, simultaneous with Thrawn: Alliances audiobook)
- Thrawn: Alliances audiobook (First appearance, simultaneous with Thrawn: Alliances audiobook)
- Thrawn: Treason
- Thrawn: Treason audiobook