Heldrake

http://www.frontlinegaming.org/ 

http://brushandminiaturetorture.blogspot.com/2012/11/heldrake.html

"Out of the storm it came -- a beast of brass and obsidian, of cable and bone, the wind from its jagged pinions reeking of brimstone and rotten souls..."

The Heldrake is a winged Daemon Engine of Chaos Undivided that plummets out of the skies like a living comet, hurtling towards enemy aircraft and crashing claws-first into them from above. Each Heldrake is a vicious predator, hell-forged deep within the Warp. These monstrous creatures take cruel joy in diving down upon the unsuspecting air support of their enemies in order to shred them into pieces with is scything wings and rune-carved talons. Heldrakes are usually found within the ranks of the Chaos Space Marine Traitor Legions, attaching themselves to the bottoms of Chaos warships and waiting until the ship reaches low orbit of its target planet, then the Heldrake will plunge into the world's atmosphere and engage enemy forces in the war-torn skies.  

Often, the first sign of a full-scale Chaos Space Marine invasion comes in the form of an attack by Heldrakes. These metallic monstrosities traverse the void between the worlds by clinging to the undersides of Chaos Space Marine attack ships, wings folded protectively around themselves in the manner of bats and their piston-driven claws clamped onto the fuselage above. Dark umbilical cables, sheathed in organic webbing, probe outwards from each Heldrake's body to burrow into the host voidship's outer surface, drawing away raw energy as a leech draws blood from its victim. When the Chaos warships arrive in low orbit, the Heldrakes detach themselves, unfurling their great wings as they plummet towards the atmosphere of the victim planet below. Some will soar through the skies as heralds of the destruction to come, retractable weapons pushing out from their gullets and spitting volleys of red-hot bullets that cut down the scrambling, earthbound defenders below. Others prefer to plunge through the clouds into the crucible of battle, screaming in savage joy as they crash headlong into the fight.