Koko Kuroki is a fictional character from the anime series Yes! PreCure 5. He is a mysterious and magical being from the Palmier Kingdom, who takes on the form of a small yellow creature resembling a lion. In his human form, Koko appears as a young man with gentle features and a calm demeanor. He serves as a mentor and guide to the Pretty Cure team, providing them with support and encouragement as they fight against evil forces threatening their world. Koko's wisdom and kindness make him a beloved character in the series.