Henri Poirier was a French actor primarily known for his extensive work in voice acting, particularly for the French dubbing of animated series and films. Born on March 21, 1932, in Colombes, in the Hauts-de-Seine department of France, he built a prolific career that spanned several decades until his passing on February 8, 2005, in Le Blanc-Mesnil. While he also appeared in live-action films and television, his voice became familiar to French audiences through numerous anime and animated productions.

Poirier's voice acting portfolio includes several notable roles in anime series that were dubbed for French television. He is recognized for providing the first voice for Papa Moomin in the series Tanoshii Moomin Ikka, known in French as Les Moomins. He also voiced the antagonist Lord Zero in the adventure anime Montana Jones. Additionally, his work includes the role of Mr. Bertigny in the soccer-themed anime Moero! Top Striker.

Beyond these titles, Poirier lent his voice to a wide range of other anime and animated works. His credits include the French versions of classic series such as The Rose of Versailles, where he voiced multiple characters including Cardinal de Rohan and King Louis XV. He was also featured in the French dubs of Acrobunch, Calimero, Dragon Quest: Dai no Daibōken, Ninja Robots, and the film Gauche the Cellist. His work extended to non-Japanese animation as well, such as voicing Captain Kidd in The Adventures of the Galaxy Rangers.

Poirier was a recurring presence in the French dubbing of the Asterix animated film series. He contributed voices to several installments, including The Twelve Tasks of Asterix, Asterix Versus Caesar, Asterix in Britain, and Asterix and the Big Fight. This body of work also saw him collaborate frequently with fellow voice actors Roger Carel and Pierre Tornade, as well as the series' creator René Goscinny. Another notable voice role was Treebeard in the French version of Ralph Bakshi's 1978 animated film adaptation of The Lord of the Rings. His career demonstrates a significant contribution to the field of animation dubbing in France, bringing a variety of characters to life for French-speaking audiences over the course of more than two decades.