Blue Devil Squadron consisted of a small group of 3 TIE Defenders, a Squadron constructed by Ali Tarrak, a Crime Lord from Nami. Following the discovery of Tarrak's Deep Space Manufacturing Facility, where she was producing TIE Defenders, Admiral Thrawn initiated an assault to halt her efforts in spreading the TIE Defender design. After her primary fighter defenses were eliminated, Blue Devil Squadron was deployed, seemingly before their shields reached full capacity, to engage the Imperial-class Star Destroyer known as the Grey Wolf, while Red Devil Squadron tried to escort them. However, a Missile Boat under the control of Tan Maarek Stele intercepted and annihilated them.
This squadron of fighters is featured in mission 6 of Battle 10. Within the game, the fighter squadron is identified as Blue Devl. Considering the existence of another TIE Defender Squadron named Red Devil, along with a Y-wing Squadron referred to as Gold Devil Squadron, this article posits that the in-game name is a typographical error made by the game developers.