Okay, the basic concept is that Drizella is the creator of the goblin race, and a lesser god, but with delusions of grandeur.
When the other gods were picking materials to create their races with, they picked sensible things. For example, Moradin crafted the dwarves out of stone and metal, using steel for their hearts, Correllon used the leaves, flowers, and other bits of nature to make the elves, so on and so forth.
Drizella created the goblins out of mud, muck, and all the nasty burrowing things, like worms and slugs, just to prove she could make a better race than the others, even with inferior building materials. She and the goblins believe she succeeded, the other gods and their races... less so.
Drizella takes the form of a goblin 'maiden' with a snail-like lower body. Her domains are Earth, Community, and Liberation. She wishes for goblinkind to unite as one and take their rightful place as the most powerful race on the planet.