The Burning Man is essentially 1.5 Tyrants in one body, the result of the Governor-General’s sabotaged ascension ritual near the end of 2e. By virtue of his Tyrant-ness ol’ Burny is inherently an arch nemesis of the Neverborn, and the psychological threat he poses just by looking at him is a grave danger to everybody.
He’s probably outside the scope of playable Master and comprehension as a written character, though we do have playable Tyrants already in the game so it isn’t impossible.