Ogre

An ogre is a large creature native to Narnia. In many ways, they are similar to Trolls and Cyclopes, sharing the latter's low intelligence and massive size, and to Giants which they seemed to have appeared to be more larger and bigger and yet more smarter of than trolls, ogres and cyclopes. While Onis are like Ogres but they have either one or two horns on it's head

They were followers of the White Witch, and attended the sacrifice of Aslan. One served as Jadis' jailer at her her castle. One Black Oni named Ork is the Jadis' General.

In Prince Caspian, a few ogres survived, by 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 movie, they 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.

Trivia

 * The Black Oni is considered to be the General of Jadis's Army in the anime adaptation of The Lion, the Witch, and the Wardrobe made by Tezuka Productions, but in the Disney movie, The general is a bad Minotaur named Othim