Devilfish

A taloned hand punched through the bulkhead separating the seated armoured suited Tau warriors from the drive compartment of their Devilfish transport. An evil demonic visage followed. It emanated waves of unnatural horror that clung to any who saw it like a stench of death and decay. The warriors nearest to the apparition were retching as they tried to squirm themselves as far away from it as possible. They were crammed too tightly together in the transport's troop compartment to use weapons or in any way defend themselves or escape. It paused to allow them to appreciate the horror of their predicament. It spoke to them, not in words but directly and repulsively into their minds. "Canned meat I like that." Caliban launched himself into the compartment faster than the warriors could react. A spray of blood, bowels, gobbets of flesh and gurgling screams resonated around the compartment. In less than a minute Caliban was grinning, and preening itself while hovering over a layer of minced tissues awash with blood. The intercom snapped and spat. "Ah, the pilot," murmured Caliban and reached through the ceiling of the compartment. The Hammerhead lurched and spun. Caliban teleported. The Devilfish raced out of position and smashed into it partner in formation. Both hit the ground with an immense flash and explosion.
Further down the line of Devilfish and Hammerheads the same events recurred.

The sentry reported to Gann Arfur, "Flashes and explosion on the horizon, Sir, North West , sensors suggest 20 kliks distance."
"Any idea Hammerhand?" asked the Gann.
"Probably my and Hawk's pet."
"What sort of pet?"
"Our daemonhost, I let him off his leash just before I Ieft to come here. I have also asked him to bring his associate Moloch this time."