Dean Hagopian is a Canadian actor and voice actor with a career spanning several decades in film, television, and animation. Born on August 24, 1937, in Moncton, New Brunswick, he is of Armenian descent. Before becoming an actor, Hagopian was a musician, serving as the original lead singer for the 1960s band The Staccatos, which later evolved into The Five Man Electrical Band. He transitioned from music to a successful career in radio broadcasting, working at major stations like CKOY in Ottawa and CFOX in Montreal, before moving into acting in the late 1970s.

As a voice actor, Hagopian contributed to numerous animated series dubbed in English, particularly for the Canadian and international markets. He was known for his versatility and ability to perform a wide range of accents and dialects, a skill highlighted in his professional profiles. His voice work includes the role of Helpabit in the series Mori no Yōki na Kobito-tachi: Berufi to Rirubitto (known in English as The Littl' Bits). In the anime Meiken Jolie (titled Belle and Sebastian in its English version), he provided voices for multiple characters, including Fernandez and the Skinny French Hunter. He is also credited with voicing Kalmec in several episodes of the classic animated series The Mysterious Cities of Gold.

Beyond the roles specified, Hagopian's extensive anime and animation voice filmography includes prominent parts such as Seymour "Big" Cheese in Samurai Pizza Cats, General Guph in The Wonderful Wizard of Oz, and Mr. Smee in the Saban dub of Peter Pan: The Animated Series. His work extended to various other productions, including The World of David the Gnome, Sharky and George, and Adventures of the Little Koala. He also performed voices for video games, such as the character Nyluus in Raze's Hell.

Throughout his voice acting career, Hagopian frequently collaborated with the Montreal-based studio CINAR (now WildBrain) and worked alongside a consistent pool of Canadian voice actors, including A.J. Henderson, Richard Dumont, and Terrence Scammell. His ability to perform multiple characters within a single series was a noted aspect of his work. A notable later achievement includes his return to the role of Seymour "The Big" Cheese for the 2025 video game Samurai Pizza Cats: Blast from the Past, reuniting with other original cast members. With over 60 animation and video game credits to his name, as well as numerous live-action roles, Dean Hagopian is recognized as a versatile and experienced figure in Canadian voice acting.