Céline Tran, known as Katsuni, is a French-Vietnamese former adult film actress who began her career in 2001 under the stage name Katsumi, later changing to Katsuni due to legal issues, and worked with major companies like Marc Dorcel, Digital Playground, and Evil Angel. She retired from professional porn in 2013 after appearing in over 400 films, earning multiple AVN Awards, and has since pursued mainstream acting, writing, and coaching.