Botan is a key supporting character in the anime series 'Yu Yu Hakusho.' She serves as a guide to the Spirit World, introducing the protagonist, Yusuke Urameshi, to his new role as a Spirit Detective. Botan is cheerful, resourceful, and always willing to help her friends. She is recognizable by her blue hair and often rides a flying oar. Botan plays an essential role in providing information, support, and comic relief throughout the series.