Interdimensional buds!

Dormir is from a sub-dimension connected to our own called Somnifer, and can wander between that and various other places, Pachy is from the 5th dimension and can go anywhere in the multiverse. Thus they met up at some point and realized that, despite their juxtaposed personalities, they got on famously! They often have tea among the mushroom gardens of Sominfer, and Pachy is always down to help with Nightmare wrangling. For some reason they seem to give up a lot faster when she comes along...can't imagine why.

Art by  pac