“Sounds like “mogul,” but a pun by including an N in it…”
How is that a pun? If the Black Racer’s name was Mogul, maybe.
I thought it was obvious that Mongul is just a variation on “Mongol,” implying he has a thirst for conquest.
Anyway, Mongul is pretty one-note. They found use for him as a story device during “Exile” but he’s just a power hungry tyrant. No one cared when he and his son were offed in NE.
Mongul would have been more apt if he was introduced in the Silver Age as a Green Lantern villain.