Illuminati

The Illuminati is a symbol used by Freemasons to portray god. However, it has been used in Never Ending Story.

The Illuminati are the masters of Bill Cipher. They revived him and conquered Earth in Part 12, using Plankton's body.

In Chapter 3 Part 3, a division of the Illuminati called "The Secret Triangle Club" is discovered hiding in the Krusty Krab freezer, which are then knocked out of the universe by Mr Game-And-Watch. They have not appeared since.