|Continuity||Rise of the Planet of the Apes|
| First Appearance: Rise of the Planet of the Apes
Last Appearance: Rise of the Planet of the Apes
Maurice was an orangutan who came from a circus before living in the San Bruno Primate Facility. Like Caesar, he learned to speak in sign language and he was the first ape to befriend Caesar. He asked Caesar if he ws hurt bad by Rocket, then Caesar was surprised that Maurice knows sign. Maurice tells Caesar that humans dislike smart apes. When Caesar told him that apes together are strong, Maurice simply replied with "Apes stupid". This prompted Caesar to steal Will's ALZ-113 drug and expose the other apes to it. After receiving the ALZ-113, Maurice nodded his head in thanks. He escaped with Caesar and helped free their fellow apes at the San Francisco Zoo and at Gen-Sys Laboratories. He and Buck were cornered by police, but he used a manhole lid as a weapon to throw at one of the police cars, which caused it to crash into a small shop. Then, on the Golden Gate Bridge, Maurice and the orangutans were ordered by Caesar to attack from the bottom of the bridge supports. After reaching the safety of Muir Woods Park, he and the other apes started to stand upright like Caesar, who showed them the top of the redwood trees, looking out over the San Francisco bay.
- Maurice was named in tribute to Maurice Evans, who played chief orangutan Dr. Zaius in Planet of the Apes and Beneath the Planet of the Apes, although the movie used the American pronunciation of his name ("Maw-reece") rather than Evans' own British pronunciation ("Morris").
- In Battle for the Planet of the Apes, both the Lawgiver - the wise historian - and Virgil - the advisor - were potrayed as orangutans. Thus, the potrayal of Maurice as a just, wise ape leads to a line of possibly related future wise orangutans like the Lawgiver and Dr. Zaius.