Yogi Bear & The Secret of NIMH Yogi Bear and the Secret of NIMH is upcoming crossover film created by TheCityMaker. It will appear on YouTube in the near future. Yogi Bear, his friends, Mac, Bloo, Wilt, Eduardo, Coco, Mr. Herriman, and Frankie Foster went on a journey to meet Mrs. Brisby, who lost her husband and had kids. On this adventure in the Rose Bush, they meet Justin, who told Mrs. Brisby about NIMH coming to the farm, and face-to-face with the evil Jenner, to save Mrs. Brisby's family. Trivia Mrs. Brisby is revealed to be Yogi's 3rd cousin. Jeremy is revealed to be Wally's 2nd cousin.