Mithias screamed as Luigi grabbed him and injected some kind of hell into his weakened body. A large shadow claw swept them both off their feet and pushed Mithias away from the merciful strike of the paladin's hammer. The fighting continued. Valentus now had other problems to deal with. The world swirled in screaming, blackness, and blood just as it had only moments ago.

Left alone to deal with his tormentuous transformation, Mithias was submerged in blinding agony. In some alleyway, some gutter somewhere, his body writhed and grew violently, snapping bones and tearing flesh and forcing tissue to change against its own nature. He tried to fight it, but his mind could not save his body. He was suffering, greatly. Finally, after eternal moments that barely left the vampire able to remember where he was, Mithias emerged from the forgotten smoke-covered piles of burning rubble and cooling molten asphalt, and he was a different creature, something half vampire, half daemon.

He was huge and terrifying. He had long legs with clawed feet, blackened skin, a mane of black down his back, a single left arm with an extra forward-pointing spiderlike limb coming out of his back above it that was sharp like a lance at the tip. His head was a maw of sharklike teeth and glowing eyes, and out of his right shoulder, where is arm used to be, came 20 or so, long, writhing tendrils of blood, controlled by his will. He looked like some kind of dark Japanese god of evil. 

The tentacles preceded him out of the ally as he came forth, back into the battle. Maw dripping with blood and saliva, he turned vengefully toward a handful of chaos marines and launched his tentacles at them from his right side. The fleshy snakes quickly wrapped themselves around the necks of the enemies and flung them around, bashing them into the buildings, ground, each other, and even tearing the heads off their shoulders, metal and all. 

Pain drove him this time, unimaginable pain, as his vampire healing tried to combat chaos' abuse of his body. It was pain, anger, and the memory of a being so great that was able to hold onto hope despite impossible odds. The crushing darkness that had defeated the vampire's will and mind hadn't been able to touch him, and Mithias, although he himself had failed and did not have that level of strength, had witnessed it and admired it. It was a ray of light to him. He would help the paladin, and perhaps then he could receive a merciful release from his torture. 

Having begun his war on the forces of chaos, Mithias was no more satisfied, then he saw Luigi. His eyes glowed brightly, lips curled back to reveal the razorshapr teeth, and the daemon-vampire beast charged. He wanted revenge.