This is a very unsavory story — not the uplifting of ideals you have come to expect from Godchecker. ULGAN, wishing to make a start with his creation project, made ERLIK from a chunk of mud to use as free labor.
His mouth made an excellent hod. But ERLIK had other ideas. While ULGAN was otherwise engaged making clay dolls, he spat out his very own landfills full of slime and saliva.
Meanwhile, ULGAN had run out of life mix. Not wishing to leave the building site vulnerable to thieves, he got himself a guard dog whilst he went off to replenish supplies.
Wanting to have a play with the dolls, ERLIK tried to bribe the dog with a mud bone. But the dog just snarled. So in fit of pique ERLIK spat over the fence and covered all the dolls in disgusting slime.
On his return ULGAN learnt what had happened and turned all the dolls inside-out. That’s why we are slimy inside but dry outside, which on reflection is no bad thing. To teach ERLIK a lesson, ULGAN slung him into the Underworld, but ERLIK managed to smuggle a few of the dolls with him.
Left to his own devices, he turned them inside-out again, which is why the dead become so slimy outside and dry bones inside.