Hishikawa Rikka (菱川 六花 Hishikawa Rikka?) (or Rachel in the English Dub Glitter Force Doki Doki) is one of the five main Cures in Doki Doki! Pretty Cure. Her alter ego is Cure Diamond (キュアダイヤモンド Kyua Daiyamondo?), or Glitter Diamond in the Glitter Force Doki Doki dub.