Tsukikage Yuri is the person seen in Heartcatch Pretty Cure!, though is considered the fourth Cure to join the heroines, and throughout most of the first half of the season, she is clouded in mystery. She appears in the dreams of Hanasaki Tsubomi, Kurumi Erika and Myoudouin Itsuki before they become Pretty Cure. In the series, she is the first Cure to make an appearance, her identity being Cure Moonlight.
Calm and composed, Yuri displays a cold personality to both Tsubomi and Erika. She is frequently at the top of exam scores at school, though does not seem to care about it.
In the past, she used to be overconfident in her powerful abilities as Cure Moonlight, thinking that she did not need partners, though Cologne thinks that she simply did not want to burden anyone else with the task of becoming Pretty Cure.