
Acting
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Kathryn "Kathy" Mullen is an actress, voice actress, and puppeteer most closely associated with Jim Henson projects. She began performing on The Muppet Show in its third season, primarily as Gaffer the Backstage Cat. She also voice directed Dog City for Nelvana, worked as a designer for The Muppet Movie, a performing assistant for Yoda on The Empire Strikes Back, and was one of the creators of Between the Lions. While reprising this character for several Muppet movies, she also created the character of Mokey - a gentle, New Age style Fraggle - on Henson'…

Jerry Nelson: A Celebratory Birthday Animatic
as Mokey (voice)

Reflections of 'The Dark Crystal'
as Self

Fraggle Rock: Dance Your Cares Away
as Mokey Fraggle (voice)

The Very Best of the Muppet Show: Volume 3
as Gaffer / Female Singer / Additional Muppets

The Very Best of the Muppet Show
as Additional Muppets

The Very Best of the Muppet Show: Volume 2
as Additional Muppets

Heat
as Doreen Daniel, Diner Patron (uncredited)

The World of Jim Henson
as Self (archive footage)

Muppet Sing Alongs: It's Not Easy Being Green
as Mokey Fraggle / Frog (voice) (archive footage)

Sesame Street: Sing, Hoot & Howl with the Sesame Street Animals
as Pig / Farmer Brown's Wife (voice)

Between the Lions
as Leona · 140 ep.

The Wubbulous World of Dr. Seuss
as Morton the Elephant-Bird · 40 ep.

Allegra's Window
4 ep.

Jim Henson's Little Muppet Monsters
13 ep.

Fraggle Rock
as Mokey Fraggle / Cotterpin Dozer / Crosscut Doozer / Merboo Merggle / Rock Hockey Hannah / Wimple Fraggle / The Old Gypsy Lady / Sally Spotless / Tammy Shrub / Baby Doozer / Doozer #2 (voice) · 96 ep.

The Muppet Show
as Additional Muppets (voice) · 48 ep.
The Muppet Movie
1979