Ogre

Ogres were a race of large, cruel, monstrous and hideous humanoid monsters that live in the caves of Canada.

The Lost Hero
As Jason, Piper, Leo, and Hedge were rescuing Tristan McLean, Enceladus summoned a group of Gegenees, and four Ogres to attack the heroes. One of them was named Brutel who battled Leo until he was eventually defeated. Many Ogres fought in the battle against the Hunters of Artemis, but they were defeated after Hera managed to form a bright light and destroy them.