Krystal Millie Valdes is a bilingual Cuban-American actress who has built a career spanning theatre, film, and voice acting for anime. Born in Miami, Florida, she developed a strong foundation in performance by earning a Bachelor of Fine Arts in acting from the New World School of the Arts, the University of Florida's conservatory for the arts.

Valdes is known for her extensive work providing English voices for characters in the long-running and popular Japanese anime series Soreike! Anpanman. She has frequently voiced the character Dokeen in numerous films within the franchise. Her credits for this role include Soreike! Anpanman: Yōsei Rinrin no Himitsu, Soreike! Anpanman Yomigaere Bananajima, Soreike! Anpanman: Happy no Daibōken, Soreike! Anpanman: Inochi no Hoshi no Dolly, Soreike! Anpanman: Ringo Bōya to Minna no Negai, Soreike! Anpanman Omocha no Hoshi no Nanda to Runda, Soreike! Anpanman: Shabondama no Purun, Soreike! Anpanman: Black Nose to Mahō no Uta, Soreike! Anpanman Kagayake! Kurun to Inochi no Hoshi, and Soreike! Anpanman Kirameke! Ice no Kuni no Vanilla-hime. In addition to her work as Dokeen, she has also voiced other characters in the Anpanman universe, such as Usa and Kulun in various installments. Her role as Dokeen in the 2016 film Soreike! Anpanman: Omocha no hoshi no Nanda to Runda is specifically credited as being for the English version of the movie. Beyond the Anpanman series, her anime voice acting portfolio includes the role of Ayumi in the popular detective series Case Closed.

Alongside her work in anime, Valdes has an accomplished career in live-action performance. She has held leading roles in several feature and short films, including 93 Miles, which screened at the Cannes Film Festival, and the horror film Summoning the Spirit, for which she won the award for Best Actress in a Feature Film at the Houston Horror Film Festival. Her work has earned her recognition as one of American Theatre Magazine's "People to watch" in 2024. With a background that includes over forty-six theatrical productions, she is deeply committed to the stage and is a proud member of the Actors' Equity Association (AEA). She has also been active in her local arts community, working as an actor, director, and playwright in South Florida and serving as a founding member and Company Manager of the New City Players.