Rats

The rats are the 3 pests that run the Shop found in various levels throughout the game, usually with a large hole in the wall behind them.

They allow you to access the shop and trade in your Gold for "Shiny Things," otherwise known as upgrades for your 3 characters.

Level 9:

 * "*Sniff Sniff* Gold ...Humans have gold."
 * "Gold wont help humans down here."
 * "Lucky for humans we find shiny things on corpses."
 * "We trade shiny things for gold."

Level 14:

 * Humans still alive.
 * Human still have gold.
 * We still have shiny things.

Level 19:

 * Rat King wants more gold...
 * Humans want more shiny things...