Mariella Green

 is one of the protagonists in Rainbow PoP! Pretty Cure! and its sequel, Rainbow PoP! Pretty Cure! Spectrum Sparkle!. Mariella appears first as she loves ballerina and skating. She was quitet, simple and calm, who loves to take care of the enviroment. Her family has a veterinary, which she has a spend time with them. She can care animals and plants. She loves to create flower bouquets. She loves leaves that make her happy.

Her pretty Cure ego is Cure Harlequin, the color of Tranquility, holds the power of Nature.

Cure Harlequin
Kyua Hārekuin (キュアダンデライオン) is the pretty Cure form of Mariella. She represents the color of Tranquility, holds the power of Nature.

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