Hyperborean Cyclops

"But we Hyperborean Cyclopes, the northern clan, we're the best!"

- Ma Gasket explaining to Piper McLean before she was going to eat her.

Hyperborean Cyclopes (also known as the Northern Cyclopes) were distant cousins of the Elder Cyclopes, and enemies to the Southern Cyclopes. These ones were monstrous cannibals that eat people (including demigods), and were good at smashing things. The Northern Cyclopes were never loyal to the gods since they never build weapons for them.

It's possible that Polyphemus could be a Northern Cyclops since he trapped Odysseus and some of his companions in a cave.

In The Lost Hero, a few northern Cyclopes named Ma Gasket, Torque and Sump were planning to eat Piper, Jason, and Leo for breakfast, but they were later defeated.

Known Northern Cyclopes

 * Ma Gasket
 * Torque and Sump