Johnny Depp lends his voice to a chameleon and Ned Beatty is the voice of the old tortoise who is the calculating mayor of Dirt in the Paramount Pictures and Nickelodeon movie Rango. Dirt is a small town in the Mohave desert. A rough bunch of critters, the Dirt townspeople are survivors, and their lives depend on two things: not getting eaten by a predator and getting enough water. The old mayor is a figure of power and authority for the town, and he knows how to use that position to his advantage.