It'd have to be a higher 'authority' than Spectre.
"A great tactician creates plans.
A good tactician recognizes the soundness of a plan presented to him.
A fair tactician must see the plan succeed before offering approval.
Those with no tactical ability at all may never understand or accept the plan.
Nor will such people understand or accept the tactician.
To those without that ability, those who possess it are a mystery.
And when a mind is too deficient in understanding, the resulting gap is often filled with resentment."
IIRC, his possible origins include:
-Wandering Jew story
-A fallen angel who was neutral during the war in heaven.
-Survivor of previous universe similar to Galan/Galactus
-Someone who committed suicide after questioning God's actions after he was spared God's wrath initially.
Last edited by JakeTheBank on Apr 6th, 2011 at 11:54 PM
Spectre and Nekron were unable to do it, but I'd partally attribute that to the fact that he has some level of protection/damnation by the Presence (3/4 of his origins involve this, and the fallen angel story is kinda confirmed by Constantine in Trenchcoat brigade), so at least within the confines of the DCU (mainstream or Vertigo), I'd say noone but Michael/Lucifer could pull it off.
If this unkillableness carries over into an neutral setting, then I'd say only Michael, Lucifer and The Tribunal (all vassals for the power of truly omnipotent beings) could kill him. If it doesn't, then really all you'd have to do is be more powerful than The Stranger, but that in itself is incredibly difficult, as although he has few feats, it's made very clear The Stranger is incredibly powerful, but he uses this to help heroes claim their own victories, rather than just turning up and taking out the bad guy.
Either way, I'd guess the unkillableness would stay on, so yeah, Michael/Lucifer/LT.