Lennie Weinrib was an American actor and voice artist whose prolific career spanned several decades, making him a familiar presence in American animation during the 1970s and 1980s. His work included significant contributions to the English-language adaptations of Japanese anime series for the American market. He was born on April 29, 1935, in the Bronx, New York, and began his entertainment career working with bandleader Spike Jones and in theater productions before transitioning to television and voice work.

Weinrib is perhaps best known to anime fans for his multiple roles in the Voltron franchise. In the series Voltron: Defender of the Universe, he provided the voice for Hunk Garrett, the pilot of the Yellow Lion and the team's chief mechanic. He also voiced the series' primary antagonist, Prince Lotor, the power-hungry and manipulative ruler of the Planet Doom. His association with the franchise extended to the 1986 feature film Voltron: Fleet of Doom, where he reprised these roles as Hunk and Prince Lotor, and also voiced the characters Cliff and Rocky. His work in anime adaptations was not limited to Voltron; he also provided voices for the series Saber Rider and the Star Sheriffs.

Beyond these specific anime roles, Weinrib's voice acting career was extensive and varied, primarily within American animation. He was the original voice of the character Scrappy-Doo in the Scooby-Doo franchise. He voiced both title characters in the Roland and Rattfink cartoon shorts, Gomez Addams in the 1973 animated series The Addams Family, and provided numerous voices for The New Adventures of Batman, including The Joker, The Penguin, and Mr. Freeze. His other notable credits include characters in The Smurfs, The Flintstones, and Inch High, Private Eye. His work was characterized by a high energy and a versatile vocal range that allowed him to play everything from heroic allies to dastardly villains.

Weinrib's career was marked by frequent work with major animation studios of the era, including Hanna-Barbera and DePatie-Freleng Enterprises. In addition to voice acting, he was also a writer and director. He was the head writer for and voiced the title character in the popular live-action children's series H.R. Pufnstuf. His achievements in the industry are reflected in the sheer volume of animated content he contributed to, creating voices that defined characters for a generation of viewers. Lennie Weinrib retired from acting in the early 1990s and moved to Chile. He passed away on June 28, 2006, in Santiago, Chile.