The Cephalopod Lodge members are all some form of cephalopod. They appear in the episode "Cephalopod Lodge." They are of many different sizes and shapes.
They all wear the same red robes and hats. Their hats have an eye on them, and other actions performed by the members may refer to Freemasonry, the Illuminati, or any other secret ridualistic organization. Squidward was once a member of the lodge, but got banished because of a misunderstanding when SpongeBob and Patrick followed him to the lodge meeting, and caused chaos.