Tarzan Who Doesn't Say Too Much is a jungle-dwelling kangaroo. He is named after his tendency to say nothing but "Ugh." He is always seen with Tarzan the Very Strong and Tarzan the Animal Guy.
Tarzan Who Doesn't Say Too Much is primarily purple. He wears a tiger loincloth and a leaf necklace.
Austin has played Tarzan Who Doesn't Say Too Much in one episode of The Backyardigans: "The Heart of the Jungle" from season one. He also assumes this role in the first season's opening sequence.