For /u/TailForADwarf who described character as follows:

Mimsy is a pseudodragon/fairie dragon that runs a variety of shops across the multiverse, all named 'Mimsy's world of Whimsy'. Like the Tardis, their internal dimensions defy the spatial constraints of the building they find themselves housed in. It's possible, or maybe even probable, that Mimsy is not all she appears to be.

To look at, Mimsy is little different from any other Pseudodragon - no larger than a housecat. The comparison is fitting - in many ways, she is more like a cat than a dragon - her legs end in feline paws, and her tail, though scaled, swishes and flicks as she talks. Her scales are a soft, purple hue, shimmering, and pristine, and her eyes are large, blue, and deceptively innocent. She sits upon the weathered wooden counter of her shop, atop a pile of coins - some gold and familiar, while others esoteric and minted whoever knows where. On the shelves behind her and spilling onto the counter, beneath a banner bearing the name are all manner of items. Many of them are intensely magical - a weathered hand and eye sit together with rune-carved swords, folded cloaks, bottles, boxes, bags, belts, and all manner of wonderous items. Of note, on the far end of a counter, is a small stack of limp-looking sandwiches.

The last time we met Mimsy, she had us burn down the shop of a competitor, "Cruel, Cruel Arnold" with him inside. He sold pot plants. She also sold us magical items that we knew had been destroyed by the BBEG. She's like that. She might be a god.