Huhueteotl is the fire god; he looks like a reptile demon.
The text says "The doggie and the shoggoth can be friends." Siah had a stuffed doggie (called Favorite Doggie) and also a stuffed Shoggoth (yes, from Lovecraft). They were getting along. He still has the doggie; not sure where the shoggoth has gotten to (perhaps it slipped into another, more hideous, dimension?)