Bakers

"The Bakers explained cheerfully that the multiverse was an infinitely large multilayer cake, baked goods were the only true currency, and they had been banished from the surface by being overly aggressive in trying to convert people to their ways. With the benefit of hindsight, the Bakers should have been more diplomatic in their approach, letting the beauty of their baking (the cake was genuinely good, with a flavor no one could quite identify) speak for the righteousness of their beliefs. Now they were stuck in the sewers where good ingredients were sometimes hard to come by."