Destiny 2's Lore and Story from Heresy seems to imply that there might be one last Skyburner who's survived for a decade onboard the Dreadnought. If he has survived, then he is the last of the Skyburner's Legion and is essentially the Eris Morn of The Cabal. The lore is not definitive and he might actually be dead by now, but the lack of a confirmation leaves the door open for the Last Skyburner to still be alive somewhere in the bowels of the Taken King's Ship!
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