Kate Kelly is a Brazilian actress, voice actor, and dubbing director with an extensive career in dubbing for animation and live-action productions. She began her work in the field during the era of the Alamo studio, initially focusing on voicing characters in numerous anime series. Over the years, she has become a recognized voice in the Brazilian dubbing industry, known for her versatility and the emotional depth she brings to her characters.

Her filmography is particularly robust in the anime genre. Kelly is widely known for her long-standing role as Momo Yaoyorozu, the creative and resourceful heroine in the popular long-running series My Hero Academia. She has voiced this character across the main television series, original video animations like My Hero Academia: Make It! Do-or-Die Survival Training, and the feature film My Hero Academia THE MOVIE: World Heroes' Mission. Another significant role is that of the determined and complex Clair Aoki in the supernatural action series Gleipnir. She also voiced the character Liliko Kinutsugai in the Netflix original anime Dragon Pilot: Hisone and Masotan.

Beyond these prominent roles, Kelly's work spans a wide variety of anime. She voiced Kaela Yoshinaga in the Netflix original series B: The Beginning and its sequel, B: The Beginning Succession. In the steampunk sports anime Levius, she portrayed Natalia Garnet, and she took on the comedic role of Heine of the Flame in the isekai series Combatants Will Be Dispatched!. Her repertoire includes a range of other characters such as Irina Jelavic in Assassination Classroom, Miria in Claymore, Minene Uryū in The Future Diary, Sakura Matou in Fate/stay night, and the young Shinko Aoki in the film Mai Mai Miracle. She has also contributed to major franchises like Pokémon, voicing Millis Steel in Pokémon the Movie: Diancie and the Cocoon of Destruction and Viola in the Pokémon XY series, as well as One Piece, where she voiced the character Mozu.

While known for her anime roles, Kate Kelly has also lent her voice to numerous non-anime projects and has worked as a dubbing director. She served as the dubbing director for the second season of the Monsuno series. In live-action dubbing, her notable roles include voicing Victoria Justice in various productions, Mack in the Teen Beach Movie films, Ella in the Camp Rock movies, and Naomi Lapaglia in The Wolf of Wall Street. In a 2015 interview, she reflected fondly on voicing the character Elyon in the animated series W.I.T.C.H., noting that the role was a significant opportunity for her professional growth. Throughout her career, Kelly has been praised for her engaging performances and maintains a connection with her audience, who appreciate her work across different media.