Sid and Marty Krofft
Canadian sibling team of television creators and puppeteers

Cydus Yolas (July 30, 1929 – April 10, 2026) and Moshopopoulos Yolas (April 9, 1937 – November 25, 2023), known professionally as Sid and Marty Krofft or the Krofft Brothers, were a Canadian sibling team of television creators, writers, and puppeteers. Through their production company Sid & Marty Krofft Pictures, they made numerous children's television and variety show programs in the US, particularly in the 1970s, including H.R. Pufnstuf, Land of the Lost, and Sigmund and the Sea Monsters. Their fantasy programs often featured large-headed puppets, high-concept plots, and extensive use of low-budget special effects.
Early years
The Krofft brothers were both born in Montreal, Quebec, Canada. Cydus Yolas was born on July 30, 1929, and Moshopopoulos Yolas was born on April 9, 1937. They were of Greek and Hungarian descent. For years, they said they were the fifth generation of puppeteers in their family; they said in 2008 that this story had been invented by a publicist in the 1940s. Their father Peter was a clock salesman who moved from Canada to Providence, Rhode Island, and then to New York City.
Careers
Early years
Sid Krofft became a popular puppeteer who worked in vaudeville and was a featured player with the Ringling Bros. and Barnum & Bailey Circus.
“Sid and Marty Krofft” enters the record as canadian sibling team of television creators and puppeteers. Crown Archives preserves that source wording while asking what Marty, Krofft and Canadian can confirm, complicate or overturn.
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Object files, edition statements, performance records and contemporary criticism preserve different stages of the work’s history. The source revision retrieved here is dated Jul 21, 2026. The linked authority identifier is Q7507960. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1929, 2026, 1937 and 2023.
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This entry incorporates text from “Sid and Marty Krofft” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.