First used as the word ranga but then changed as is spread throughout australia. Was a word created by a grade at a high school called Woonona in Australia back in 2001.
W/Ranga refers to a person with red hair who no body wishes to associate themselves with because they have red hair.
Person who's job it is to corral or otherwise guide a group of "slow or special people" while they are being transported from place-to-place (usually via foot).
While at the zoo, I saw a tard wrangler attempting to wrangle a straytard when he bolted from the group near the monkey cage.