Cobéni Hanasaki is a character from Kirarin Revolution, depicted as a child or young teenager with brown hair that reaches her waist and yellow eyes. She is generally seen wearing glasses and is often viewed with a crystal ball, though she removes her glasses when performing on stage.

In terms of personality, Cobéni is described as a greatly sporty and tomboyish girl who delights in playing sports. Her role in the story is closely tied to the main character, Kirari Tsukishima, as she becomes a pop idol alongside her. After Kirari rises to fame, Cobéni and another friend, Noel Yukino, form a pop unit together, supporting each other as they work to improve their singing and acting abilities. She is a member of the group Milky Way, performing on stage with Kirari and Noel.

Her motivations center on making great efforts to brush up her performing skills, and she is known for giving emotional support to her fellow group members. The key relationships in her life are her friendships with Kirari Tsukishima and Noel Yukino, both of whom are her best friends and partners in the entertainment industry. Throughout the series, she develops primarily in her role as an idol, working alongside her friends to navigate the challenges of show business. Her notable abilities include her athleticism and her distinctive use of a crystal ball.