Ilsensine

Ilsensine is the patron deity of the Illithids in the fantasy RPG Dungeons & Dragons.

Ilsensine appears as an enormous emerald-green brain trailing thousands of nerve ganglions off into the distance. While not the creator of the Illithids, it sees the creatures as the entities most worthy of dominating the universe. Ilsensine is obsessed with gathering knowledge of all varieties, and it's ganglia strech to every corner of existance, tapping into all the knowledge of the universe. In the standard Greyhawk setting, Ilsensine dwells in the vast Caverns of Thought beneath the Concordant Domain of the Outlands, while in the Forgotten Realms setting it lives in the Deep Caverns. The Symbol of Ilsensine is an Illithid's head clutching the world in its tentacles.