Joel Martineau is a French actor primarily recognized for his extensive work in French dubbing, where he lent his voice to numerous characters in film, television, and anime. Born on January 15, 1945, in Nantes, France, he began his career in the 1960s as a stage actor and director before becoming highly active in voice acting from the 1980s until his retirement from dubbing in the early 2000s.

In the realm of anime, Martineau contributed significantly to the French-language versions of several series. Among his most frequently cited roles is Dr. Keane in the series Eagle Riders, an adaptation of the Japanese anime Gatchaman II and Gatchaman F. He is also credited with the role of Dr. Khane in Gatchaman II, as noted by the user, a character closely related to his work on the English-language adaptation. His other anime credits include providing the first voice for Roy Fokker and voicing Angelo Diaz in Robotech, as well as roles in The Rose of Versailles, Nobody's Boy Remi, and Locke the Superman.

Beyond anime, Martineau was a prominent figure in French dubbing for live-action cinema and television. He was one of the regular French voices for actor James Woods and also dubbed performances by actors such as Richard Gere, Lance Henriksen, Peter Weller, and Billy Bob Thornton. His career was marked by a consistent presence in the dubbing industry for over two decades, during which he became a recognizable voice to French audiences. He retired from dubbing in the early 2000s, bringing an end to his prolific career in voice acting.