Bubrezankaldargarez'jk the Cosmic Being (nicknamed "Bub") can be found in the Cosmic entity's plane during Fairytale II - Cure a Queen. Cosmic Beings resemble humanoid ghosts but are more angular in appearance. When asked "What universal mystery are you pondering today?" they may give one of the following responses:
Where do flies go at night?
Have you ever flicked through a dictionary and afterwards felt really depressed by how much you don't know?
Do other birds speak pigeon pidgin?
Political philosophy is an oxymoron.
Why are yawns contagious?
Do sick days include when you're sick of work?
To be is to be the value of a variable.
How do you know when you've run out of invisible ink?
Where does a snake's tail begin?
How long do fish wait to swim after they eat?
If you're halfway from here to there, which is which?
This article on an NPC has an associated dialogue page. Click here for a transcript of possible conversations with this NPC. Click here for a list of other transcripts that this NPC speaks in.
Despite being unattackable, the cosmic being technically has sound effects for being hit and dying, and an internal drop table which can be viewed here. It is mainly composed of secondary ingredients for potions made using Herblore and a non-standard herb drop table that include grimy torstol, snapdragon, toadflax, and rogue's purse.