Isla Fisher

Rango, a kooky pet chameleon, accidentally winds up in the gritty, gun-slinging town of Dirt, a lawless outpost populated by the desert's most wily and whimsical creatures. Welcomed as the last hope the town has been waiting for, new Sheriff Rango is forced to play his new role to the hilt, until he starts to become the hero he once only pretended to be.