Red Star 1 was a customized TIE/D Defender starfighter. It belonged to Iran Ryad, who held the title of Countess. The Countess had this fighter repainted with a red livery. This starfighter was lost in 5 ABY when Baron Soontir Fel triumphed over her, resulting in her accusation of treason.
According to "More Starships!", the price of Red Star 1 was listed as 262,500 credits, while a stock TIE Defender cost 200,000 credits. Nevertheless, certain other sources indicate the standard TIE Defender had a price of 300,000 credits, suggesting Red Star 1 was even more expensive.