Chief

Chief is an antagonist of the 1981 Disney movie, The Fox and the Hound and its 2006 midquel. He is Amos Slade's oldest pet dog and Copper's mentor and adoptive father.

He was voiced by the late Pat Buttram in the first movie and then he was voiced by Rob Paulsen in the midquel despite being uncredited.

When Chief barks, he is voiced by Frank Welker despite being uncredited.

Trivia

 * Chief was originally going to die after a train knocks him off the train track however the directors of The Fox and the Hound has decided that it would be too intense for kids so Chief survived after getting injured by the train.
 * In the first movie, Chief does not speak to Tod however he speaks to him in the 2006 midquel.
 * Since Chief reformed, it's possible that he learned that Tod is not a bad fox after all.