The Mattel Doll is a popular doll that has been around since 1959. The doll is named after its creator, Ruth Handler, and her husband Elliot Handler. The doll is often referred to as KEN, which is a three letter acronym for the company's name. KEN is a male doll that was introduced in 1961 and has become an iconic figure in the toy industry. He is often seen as a companion to Barbie, another popular Mattel Doll.