Moacir Ferraz is a Brazilian voice actor known for his work in anime dubbing, particularly for his role as the elderly jujutsu master Gouki Shibukawa in the popular martial arts series Baki. His professional background is rooted in theater and vocal education, which informs his approach to voice performance.

Ferraz holds a Bachelor’s degree in Performing Arts from 1995 and a Master’s degree in Arts from 2002, both obtained from the University of Campinas (UNICAMP). His master’s research focused on the actor’s voice and its connection to the body and breath, with a dissertation titled A voz parte do corpo. This academic foundation led him to teach vocal expression and theater at several Brazilian institutions, including UNICAMP, UNESP, and the Centro Universitário N. Sra. do Patrocínio (Ceunsp). He has worked as a theater actor, director, and educator for much of his career.

In anime, Ferraz is best recognized for voicing Gouki Shibukawa in the Portuguese Brazilian dub of Baki. This character is a master of ancient jujutsu arts, known for his eccentric personality and formidable fighting skills. Ferraz provided the voice for Shibukawa during the earlier seasons of the series when it was dubbed by Dubbing Company. Subsequent seasons saw the role temporarily taken over by other actors, such as Renan Gonçalves and later Henrique Reis, with Reis reportedly emulating Ferraz's original vocal interpretation.

No other major anime voice roles, recurring collaborations with specific directors or studios, or notable industry achievements outside of this credit have been documented in available sources.