The Great Owl is a supporting character in The Secret of NIMH. He seems monstrous at first, but he is really wise. The Great Owl lives in the nearby woods. He is the one who tells Mrs. Brisby to visit a group of rats who live underneath a rose bush and ask for NicodemusJohn Carradine did his voice. In the sequel - The Great Owl was mentioned. But was only seen in the flashbacks in the beginning. 

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