Ogre

An ogre is a large creature native to Narnia. In many ways, they are similar to Trolls and Cyclopes, as they share their low intelligence and massive size. Yet they appear to be bigger and more smarter than them.

They were followers of the White Witch. One served as Jadis' jailer at her castle. More were summoned by her along with the rest of her army and attended the sacrifice of Aslan, where an ogre was responsible for shaving his mane with a pair of shears.

In Prince Caspian, few ogres survived by; presumably; living in the hills of Archenland.

Behind the scenes
In the 2005 Lion, the Witch, and the Wardrobe movie adaptation, the jailer in Jadis's castle is an Ogre. Also they are seen a lot in the Battle of Beruna.

In the first Narnia videogame, an Ogre is the boss on the Beaversdam level, and are also minor enemies throughout the game.

Since Ogres appeared in the first Narnia movie; they also appear in the video game, Prince Caspian, where they fight with the Old Narnians on the side of good against King Miraz and the Telmarine army.