My Little Pony is an entertainment franchise developed by Hasbro which is marketed primarily to girls. It started as a line of plastic pony toys developed by Bonnie Zacherle, Charles Muenchinger and Steve D'Aguanno which have been produced since 1983. The ponies feature colorful bodies, manes and a unique symbol on one or both sides of their flanks. These are referred to in the two most recent incarnations as "cutie marks." My Little Pony has been revamped at least four times with new and more modern looks to appeal to a new market.