Asmodeus

Asmodeus, the Lord of the Hells, Asmoth in Draconic, is the interloper god of domination, greed, and tyranny. He rules the Nine Hells and created devils. He is usually worshipped by those wishing to gain power and influence.

Warm-blooded Pantheon

In the warm-blooded pantheon, Asmodeus is usually depicted as a large devil with dark red skin, horns, and a barbed tail. He is almost always depicted as male.
As in interloper god, Asmodeus did not take part in the initial Creation of Morn. He later interfered with Mortus's creations by giving them one single trait - selfishness. By adding selfishness, Mortus' creations were forever tainted.

Draconic Pantheon

In the Draconic pantheon, Asmoth is depicted as a red dragon. When his wings are spread, their membranes depict dark red and black flames.
During creation, Asmoth saw the original four dragons and hungered for their tremendous souls. He conspired with the other interloper gods to have Adapa lie to Bahamut so that the dragons would become mortal, thus allowing him to consume their souls. However, Bahamut instead hid the dragons in their own realms, preventing Asmoth and the other interloper gods from being able to reach their souls.
Enraged by this, Asmoth created devils and unleashed them on the material plane, intending for his armies to kill all of the descendants of the original four dragons. But when Metisat told Tiamat that Asmoth was going to take all of the souls for himself, Tiamat unleashed her demons to fight the devils. With the devils and demons weakened from fighting each other, the dragons were able to defeat them.
Some Draconic sources also claim that Asmoth taught the dragons to covet valuable items, leading to the first dragon hoards. However, this belief is not widely accepted in Draconir.