Azucena Martinez is a Mexican voice actor born on December 24, 1971, widely recognized for her extensive work in Latin Spanish dubbing for anime, television series, and films. Her career is characterized by a wide vocal range, allowing her to portray a variety of characters, from young boys and girls to adult women.

In the realm of anime, Martinez is particularly noted for her role as the vampire Shalltear Bloodfallen in the Latin Spanish dub of the Overlord series, a part she has voiced across multiple seasons including Overlord III. Her filmography includes significant roles in renowned animated features, such as the young Setsuko in Grave of the Fireflies, Nonoko in My Neighbors the Yamadas, Kaho Fujitani in The Girl Who Leapt Through Time, and Saori Makimura in From Up On Poppy Hill. She has also lent her voice to Hibari Hanakoganei in Cyber Team in Akihabara: The Movie, Monica Gabriel in Heat Guy J, and Hiroshi Tachida in Jigoku Sensei Nube.

Beyond these credits, Martinez has an extensive and diverse body of work in anime dubbing. She is the voice of iconic characters such as Yukina and the child form of Koenma in Yu Yu Hakusho, Ruri Hoshino in Martian Successor Nadesico, and Asuka Langley Shikinami in Evangelion: 2.0 You Can (Not) Advance. She has also voiced Sogo Okita and Soyo Hime in Gintama, Kyoko Tokiwa in Full Metal Panic? Fumoffu, and various characters across the Digimon and Ojamajo Doremi franchises. In addition to her on-screen roles, Martinez has contributed as an ADR director for the Latin Spanish dubs of the Overlord series and as a dubbing director for Yu Yu Hakusho: Ghost Files.

Her work is not confined to animation. Martinez is also a prolific dubber for live-action content. She is known as the Latin Spanish voice of Lily Aldrin in the television series How I Met Your Mother and has been the recurring dub voice for actress Alyson Hannigan in various FOX series and films. Her film dubbing credits include performances for actors such as Dakota Fanning, Jennifer Connelly, and Evan Rachel Wood.