Hikari Kaycee

 is one of the new protagonists and was one of the princesses in Rainbow PoP! Pretty Cure! Spectrum Sparkle!. Kaycee was one of the princesses in Colorful City and was the prettiest of the three. She was one of King Spectrum's cousins after they are invaded by Melancholy Hideout. She is the most beautiful, but she is very intelligent and distant. She has good and perfect looks. She has stubborn and strict. But she has strong sense of justice. She can help people who are weak.

Her pretty Cure ego is Cure Glimmer, the color of Moon, holds the power of Mirrors.

Personality
Kaycee was one of the princesses in Colorful City and was the prettiest of the three. She was one of King Spectrum's cousins after they are invaded by Melancholy Hideout. She is the most beautiful, but she is very intelligent and distant. She has good and perfect looks. She has stubborn and strict. But she has strong sense of justice. She can help people who are weak.

Cure Glimmer
Kyua Gurimā (キュアグライマー) is the pretty Cure form of Kaycee. She represents the color of Moon, holds the power of Mirrors.

Transformation
Metallic Sensation! Play! is Kaycee's transformation phrase in ''Rainbow PoP! Pretty Cure! Spectrum Sparkle!''.