Sovereign, Mantle's Approach, Harbinger, Hunhow, Warden Eternal, (maybe) Ur-Didact, Clem, Inaros (Warframe), a Promethean Knight, a Forerunner Guardian... [spoiler] Evidence: Sovereign is a Reaper. The Mantle's Approach is vast, and durable, and should be able to sustain the damage, Harbinger is also a Reaper, Hunhow is a Sentient Destroyer of Worlds, and can adapt to damage like his drones. He can manipulate technology and turn it against it's wielder (see: Fall of the Orokin Empire), Warden Eternal due to his spare bodies, Ur-Didact -might- be able to survive a hit?, Clem can be cloned again, Inaros is a Warframe with (if set up correctly) a lot of heatlh and could survive the damage theoretically speaking and is a Warframe (which can just be rebuilt if destroyed), a Promethean Knight's Watcher will resurrect the Knight, a Forerunner Guardian can EMP the Death Star, forcing the Empire to 'reload' the weapon. Additional evidence can be researched. You haven't. Not all mentioned are valid candidates.[/spoiler]