Pearl

Pearl is a mascot in Harmony Crystal! Go Pretty Cure!!. She can turn into a Cure Cell to assist Nina Hubble's transformation into Cure Nova. In the Japanese version, she is known as Keiko (圭子 Keiko).

Appearance
As a pixie, she has a round pink face and an oval-shaped body, His ears, limbs, and his small tail are orange. As a Cure Cell, she is inside the screen of the phone, and the phone is colored orange with a pink PreCure Charm Slot.

Before Harmony Crystal! Go Pretty Cure!!
Pearl, along with Shadow and River, was sent by the Queen of Harmony to find his Pretty Cure partner to defend the Land of Harmony from the Storm King.

The Arrival of Cure Tempest
Pearl is mentioned by Shadow in The Arrival of Cure Tempest, stating that she was sent by the Queen of Harmony to find her Pretty Cure partner.

The Second Cure is Cure Flight!
She is mentioned again by Shadow, but River and Shadow don't know where she is.

Last Cure, Cure Nova!
Pearl flies in and gives Nina Hubble her PreCure Charm and helps her transform.