Zenki Kitajima is a Japanese voice actor and stage performer known for his versatile work in anime, video games, and dubbing for foreign films and television dramas. He was born on April 13, 1961, in Nagasaki Prefecture, Japan, and has blood type AB. He is affiliated with the talent agency Mausu Promotion and the theater company Gekidan AUN.

Kitajima's career in the performing arts began with formal training at the Bungakuza Theater Research Institute, where he was a member of the 26th class. Following his studies, he gained experience with Tokyo Hoei TV before joining the innovative theater company Gekidan AUN. In the voice acting industry, he was initially represented by the Kekke Corporation before moving to Mausu Promotion in 2020.

He is recognized for a variety of anime roles, one of which is Tsutomu Mukae in the critically acclaimed series "Kids on the Slope" (also known as "Sakamichi no Apollon"), which aired in 2012. Tsutomu Mukae is the owner of the record shop where the main characters play jazz and the father of Ritsuko Mukae. Other notable television anime appearances include a police officer in his debut role in "Neuro: Supernatural Detective" (2007), Federico de Vandimion in the 2017 adaptation of "Berserk," a man in "Karakuri Circus" (2019), and a speaker in "The Royal Tutor" (2017). He has also voiced characters in web animation, such as Johannsen in the series "Pluto" (2023).

Beyond anime, Kitajima has contributed to several video game titles. His work in this medium includes roles in "Petit Four," "Death Stranding," "Ryu ga Gotoku Online," and "Pokémon Masters EX," where he voiced the character Looker. As a dubbing artist, his baritone voice has been heard in the Japanese-language versions of numerous international films and TV dramas. He has provided dubbing for actors such as Matthew Modine and William Fichtner, and his film dubbing credits include "47 Meters Down," "Godzilla: King of the Monsters," and "Horse Soldiers." His television dubbing work includes popular series like "The Flash," "Supernatural," and "Major Crimes."

The stage remains a central pillar of Kitajima's career. As a core member of Gekidan AUN, he has performed in various Shakespearean productions, including "Much Ado About Nothing," "Richard III," "Measure for Measure," and "Twelfth Night." He has also contributed as an assistant director on several stage productions, notably within the "Sainokuni Shakespeare Series" on works such as "Timon of Athens" and "Henry V," showcasing his abilities as a creative force in theater direction.