From Muppet Wiki

Sully is a construction worker, and a friend and colleague to Biff. Although Sully never speaks on Sesame Street, it is suggested that he is indeed capable of speech. In the song "Think of Your Fingers," Biff recalls Sully giving him advice on how to remember the number 5. Also, in Big Bird Gets Lost, while drilling loudly Biff tells Big Bird what Sully says.

Although Sully never spoke, Hunt can be heard in the song, "This Song is For the Birds."

In addition to working in construction, Sully is good at playing the piano. However, Biff is sometimes oblivious to this.

In the early 90s, Sully was performed by David Rudman since Richard Hunt's death.^[1]

Two construction-worker Anything Muppets who looked similar to Biff and Sully made background appearances in the sketch "Outrageous Makeover: Home Edition" sketch. (First: Episode 4132) Also, a stagehand that looked like Sully appeared in the "Survivor: Musical Chairs" sketch. (First: Episode 4134)

The duo made a non-speaking cameo in Episode 4204.

Filmography

• Sesame Street
• The Muppet Movie
• The Muppets Take Manhattan
• Follow That Bird
• The Muppets: A Celebration of 30 Years
• Sing-Along
• A Muppet Family Christmas
• Sesame Street's All-Star 25th Birthday: Stars and Streets Forever
• Elmopalooza

Book appearances

• Big Bird Gets Lost (1979)
• Cookie Monster's Book of Cookie Shapes (1979)
• The Sesame Street Dictionary (1980)
• The Sesame Street Pet Show (1980)
• What Did You Bring? (1980)
• I Have a Friend (1981)
• A Day in the Life of Oscar the Grouch (1981)
• What Do You Do? (1981)
• City (1982)
• Sesame Street ABC (1986)
• A Birthday Surprise (1987)
• A New Playground on Sesame Street (1988)
• Oscar's Grouchy Sounds (1990)
• Where is Elmo's Blanket? (1999)

Sources

1. ↑ CTW Archives