Diana De Guzmán is a Spanish voice actress known for her extensive work dubbing anime series and films into both Spanish and Catalan. Her career is characterized by a wide range of roles, from young boys and girls to mature women, demonstrating her versatility across many genres and franchises.

De Guzmán has voiced numerous prominent characters in anime. She is the Spanish voice of Ran Mouri in the initial episodes of Case Closed and Edward Wong Hau Pepelu Tivrusky IV in Cowboy Bebop. She also voiced Megumi Hanajima in the Catalan dub of the 2001 Fruits Basket series and Moeka Kiryu in the Catalan versions of Steins;Gate and Steins;Gate 0. In the series Little Witch Academia, she provided the Spanish voice for several characters, including Constanze.

Confirming the provided examples of her work, her credits include the role of Hitomi Aizawa in the Akiko OVA, Ribbon Dora in Kigurumi Sentai Quiltian, and Dawn in the film Tekkonkinkreet. She is also credited as D Sanada in Dual! Parallel Trouble Adventures Special and as Kei in Getter Robo: Armageddon, all for Spanish dubs. Beyond these, her filmography includes roles in major productions such as the Spanish dub of Belle, where she voiced Kita, and the Spanish dub of the Evangelion rebuild films.

De Guzmán's career shows a pattern of working on long-running and highly popular franchises, indicating a sustained presence in the dubbing industry. Her work spans multiple decades and includes contributions to both Spanish and Catalan language adaptations of anime, making her a familiar voice to audiences in Spain.