Jesslyn Moon

 is one of the protagonists and one of the RGB Cures in Rainbow PoP! Pretty Cure! and its sequel, Rainbow PoP! Pretty Cure! Spectrum Sparkle!. Jesslyn was Gabrielle's sister. She was a huge lover of technology, who invents and experiments all of the imaginattve things, and it gained her popularity. She is sympathetic and kind girl. But like her sister, they can do achieve for her family and their future. She also likes to play video games and loves to play Nintendo and Sega games when she is bored.

Her pretty Cure ego is Cure Denim, the color of Desire, holds the power of Technology.

Cure Denim
Kyua Denimu (キュアデニム) is the pretty Cure form of Jesslyn. She represents the color of Desire, holds the power of Technology.

Transformation
Let's Go! Pretty Cure! Rainbow Sparkle! PoP! is Jesslyn's transformation phrase in ''Rainbow PoP! Pretty Cure! and Rainbow PoP! Pretty Cure! Spectrum Sparkle!''.