Mor'du

Mor'du the bear is the main antagonist from the Disney/Pixar's film Brave. His name itself means "Death".

Brave
Long ago, upon the death of a great king, his kingdom was split between his four sons. Ruling different parts of the land, they managed to keep a balance in power. However, the oldest of them, Mor'du, seeking to conquer the kingdom for himself, waged war on his brothers. He also traveled to the cottage of the witch to "change his fate" and acquire the strength of 10 men. The spell transformed him into a monstrous, immortal bear. Centuries later, he would still menace the land and attacked King Fergus, his family and royal entourage. In the battle, Fergus lost his leg and swore vengeance on the monstrous bear and all bears.

When Princess Merida tries to find a way to change her mother back after transforming her into a bear from a spell cast by the witch, the Wisps lead her and Elinor to the ruins of the legendary castle. Covered with bones, this is Mor'du's den and he attacks Merida, who narrowly escapes with Elinor. Mordu continues following them and in the climax of the film, chases Merida when she tries to save her mother from Fergus' rage at the stone circle. A bear fight ensues between Mor'du and Elinor, leading to Mor'du's death by a falling piece of the stone circle. The ghostly figure of his human form appears in a Wisp that rises from the body, which then disappears.

Trivia

 * In the movie poster, Mor'du can be seen in the background and is in most concept art pictures where it involves large rows of rocks lined up next to each other.
 * Mor'du is directly referenced in the orginal title of Brave which was The Bear and the Bow
 * Like Lotso from Toy Story 3, Mor'du is another bear antagonist that appeared in one of the Disney/Pixar Films.
 * His appearence is very similar to the Bear from The Fox and the Hound.