In my book God Envy, there is a point where Jonas as a young man is coming into adulthood. He has already discovered how to control his universe, but has found time and time again that he is not especially good at being in control. He wished to remedy the world of suffering, yet could not even remove suffering from his own life. He wished make the world brighter, but only succeeded in making it hotter. He wished to make something so beautiful that the world would turn it's head, but instead found himself becoming more and more ugly with each new day.

In his frustration he turned his focus away from himself and the world he lived in and toward trying to make something new in the world instead of trying to make something good of the old. He begins, through capture of animals and invasive surgery, to fuse animals together as he learns to manufacture chimera.

With limited success at first, Jonas succeeds only in making unimpressive chimera, a basilisk that gnaws at the feathers on its own back, a bird with the skin of a lizard which cannot fly and must be looked after constantly. Jonas is unimpressed with his own work, but ambitious, and continues refining his techniques. Finally he emerges triumphant with the creation of his first hell-hound, a horrific feral dog with it's skin turned over that the flesh might be constantly exposed to air and that the creature might live in permanent discomfort. While the existence of the beast is horrible, it serves as becoming the first chimera crafted by Jonas which is true to form, self-sufficient, and replicable. Jonas takes pity on his horror and kills it before it must live out it's life and sees himself for the first time as having the capacity to become evil in his life.

So that is Hell-Hound, the first chimera that could have lived.