The TIE/wi modified interceptor was a TIE Whisper which was modified to the exact specifications of Supreme Leader Kylo Ren of the First Order. The starfighter was faster, more heavily armed and could had increased range. Its wings had been modified to those similar to Kylo Ren's previous Starfighter, the TIE Silencer and had Sensor Confusing Technology making it capable of a varying degree of stealth.

Kylo Ren used his TIE Whisper to hunt down the Sith Wayfinder located on mustafar and use it to plot his route to Exegol where he encountered former Galactic Emperor and Sith Lord, Darth Sidious and the Sith Eternal Cult along with a fleet of newly minted warships, all with planet killing axial superlasers.