Kristen Luna

 is one of the protagonists in PuZzLe M!r@Ge PrEtTy CuRe!. Kristen, a transfer exchange student, who was an "reincarnated" of the killed Princess Kristen of La Misterio. She is aloof, cold and distant, as well she is left alone, have no family and friends. She was very excellent at her skills despite on her tsundere like appearance. She is soft and weak, but has a strong persona and helps people who are abandoned and weak. Later, it was revealed that she was survived from the tragedy.

Her pretty Cure ego is Cure Estella, the police-detective represents the star of hope.

Personality
Kristen, a transfer exchange student, who was an "reincarnated" of the killed Princess Kristen of La Misterio. She is aloof, cold and distant, as well she is left alone, have no family and friends. She was very excellent at her skills despite on her tsundere like appearance. She is soft and weak, but has a strong persona and helps people who are abandoned and weak. Later, it was revealed that she was survived from the tragedy.

Cure Estella
(キュアハーモニー) is the pretty Cure form of Kristen. She represents the card of hope, symbolizes the star.