Cloud leviathan

Cloud leviathans are large, dangerous, and tentacled creatures that roam the vapor oceans of Spindrift, specifically in the Howling Blashie.

Fiction

IDW Generation 1 comics

The crew of the bloomship Murkdipper were busy capturing vapor eels when a boilstorm struck and a cloud leviathan attacked. Captain Karrg attempted to injure the leviathan with the ships harpoons, but the pitiful weapon proved ineffective. All was nearly lost for the crew when the cloud leviathan threatened to destroy the ship, but Galvatron appeared and destroyed the cloud leviathan without a thought. Heart of Darkness #3