Beneath the still, moonlit surface of the sea, lived a Cookie whose laughter was brighter than any pearl. White Pearl Cookie embodied the bright moonlight and pink coral, with a smile so beautiful and pure that everyone in the Kingdom were mesmerized! But the waves of destiny are unknown, as is the future... The light of the Little Moon of the Sea cannot shine forever.

White Pearl Cookie is the jubilant and hopeful, she was the moonlit baby sister of the Gem Mermaids Crimson Coral Cookie, Aquamarine Cookie, Gold Citrine Cookie, and Mystic Opal Cookie, residing in Tearcrown alongside Frilled Jellyfish Cookie the family maid. This little mermaid fell victim to her own doubts about her abilities, heartbreak over her lost young love, and the tragedies she witnessed at the hands of the Land Cookies.

She is a joyful mermaid, the youngest of the Gem Mermaids, whose laughter and kindness brightened Tearcrown. Despite her insecurities about lacking her sisters' extraordinary powers, she remained selfless, saving Lord Oyster and gifting him her pearl as a symbol of their bond.

Her love for exploration, peaceful moments by the waves, and ever-changing dreams made her endearing, but tragedy struck when she was captured by Land Cookies. Her relationship with Lord Oyster, a noble torn between duty and passion.

Though her light eventually faded, her legacy of hope, love, and sacrifice endures, embodied in the pearl she entrusted to the one she loved.