The Undying, a massive capital ship, possessed an array of abilities that remain a mystery. Its size surpassed that of other superweapons conceived using the Sun Razer.
Thanks to the Sun Razer, the Sith Empire managed to finalize its construction in a matter of years, rather than the decades it would have otherwise taken. Darth Mekhis supervised all endeavors powered by the Sun Razer, and Theron Shan along with Jedi Master Ngani Zho uncovered these projects after their infiltration and subsequent capture within the Vesla system.