About Tarzan (2005)
As a young boy being raised by gorillas, Tarzan (voiced by Harrison Chad) is worried that a fabled monster known as the Zugor (voiced by George Carlin) will someday catch him. He is disappointed that he can't run as quickly as the other young apes in his family, and his attempts to prove himself keep resulting in chaos. When an accident leaves his mother thinking that Tarzan has died and the other apes feeling that Tarzan has reached a fitting end, the boy believes it best for everyone involved if he runs away.
He finds his way to a rocky place known as Dark Mountain, inhabited by two hulking, spoiled gorilla brothers, the dim-witted Uto (voiced by Brad Garrett), the exceedingly violent Kago (voiced by Ron Perlman), and their controlling, over-protective Mama Gunda (voiced by Estelle Harris). But they fear the Zugor as much as Tarzan does, and when the booming call of the monster echoes through the valley, Tarzan is able to escape from them.