The Maw-krusha is the Ironjawz answer to the question of what could possibly be bigger than a megaboss: a vast, bat-winged avalanche of scale and spite that crushes shield-walls beneath its bulk and stops charges dead with a bellow that bursts eardrums at a hundred paces. Nothing that heavy should be able to fly. The Maw-krusha flies anyway, apparently out of spite.
Only the mightiest megabosses dare claim one, and the claiming is a legend in itself — a brawl of fists, headbutts and mutual, grudging respect that ends with one very bruised orruk sitting on one very annoyed monster. The partnership that follows is the most destructive thing in greenskin warfare, which is entirely the point. Gordrakk himself rides the greatest of them all, and cities fall where its shadow passes.