Timeline...

Jim Henson:
- Cantus the Minstrel
- Convincing John

Dave Goelz:
- 7-Words-Max (Wizard's Flunky)
- Boober Fraggle
- Large Marvin Fraggle
- Philo
- Sidebottom
- Skenfrith
- Uncle "Traveling" Matt Fraggle
- World's Oldest Fraggle, The
- Wrench Doozer

Jerry Nelson:
- Archbanger (of the Pipebangers)
- Architect (Doozer), The
- Feenie Fraggle
- Fishface Fraggle
- Gobo Fraggle
- Marjory/Marjorie the Trash Heap (Assisted by Myra Fried or Cheryl Wagner)
- Mervin Merggle
- Pa Gorg (w/ Gordon Robertson) (voice and face)
- Uncle Gobo (Gobo's great-uncle and namesake)

Richard Hunt:
- Beige Cave Fraggle
- Firechief Fraggle
- Gillis Fraggle (aka The Maestro)
- Gunge
- Herkimer Fraggle (Custodian of Rhyming Rock)
- Junior Gorg (w/ Rob Mills) (voice and face)
- Magical Spider-Fly, The (aka The Odd Old Man)
- Mean Genie, The
- Mudwell the Mudbunny
- Storyteller (Fraggle), The (Episode 8 only)
- Turbo Doozer
- Venerable Sage Lambo
- Wizard, The

Steve Whitmire:
- Crusty Doozer
- Flange Doozer (Cotterpin's father)
- Flying Batworm
- Marlon Fraggle
- Mermer Merggle
- Murray the Minstrel (Except episode 95)
- Papa Tree Creature (Gorg Bird)
- Phil Fraggle (not the voice) - Sir Blunderbrain
- Sprocket (Assisted by Karen Prell)
- Venerable Sage Hambo
- Wembley Fraggle

Kathryn Mullen:
- Cotterpin Doozer
- Crosscut Doozer
- Flutebird
- Mama Tree Creature (Gorg Bird)
- Merboo Merggle
- Mokey Fraggle (Assisted by Trish Leeper)
- Old Gypsy Fraggle
- Rock Hockey Hannah
- Wimple Fraggle

Karen Prell:
- Baby Tree Creature (Gorg Bird)
- Beast, The (Tosh's lion-like pet)
- Fluffinella (Mr. Shimmelfinney's cat) (body)
- Gorg's Killer Souffle (body)
- Judge Gavel Doozer
- Marly Fraggle
- Modem Doozer
- Red Fraggle
- Sprocket (Assisted Steve Whitmire)
- Wingnut Doozer (Cotterpin's mother)

Nikki Tilroe:
- Background Fraggles
- Merple Merggle
- Yvette

Rob Mills:
- Baby Poison Cackler
- Blue Dragon
- Glob, The
- Gobo Fraggle (Episode 82 only) (not the voice)
- Inkspots, The (w/ Gord Robertson)
- Junior Gorg (w/ Richard Hunt, until episode 86) (body)
- Lanford (Mokey's pet plant)
- Lizard (the transformed Mudwell)
- Merkey Merggle

Gordon/Gord Robertson:
- Inkspots, The (w/ Rob Mills)
- Murray the Minstrel (Episode 95 only)
- Pa Gorg (w/ Jerry Nelson) (body)
- Rumple Fraggle
- Tumbrell Doozer

Trish/Patricia Leeper:
- Aunt Granny Fraggle
- Ma Gorg (w/ Myra Fried or Cheryl Wagner) (body)
- Mokey Fraggle (Assisted Kathryn Mullen)
- Tosh Fraggle

Myra Fried:
- Ma Gorg (w/ Trish Leeper; during the first season) (voice and face)
- Marjory/Marjorie the Trash Heap (Assisted Jerry Nelson during first season)

Cheryl Wagner:
- Bonehead Fraggle
- Lou Fraggle
- Ma Gorg (w/ Trish Leeper; after the first season) (voice and face)
- Marjory/Marjorie the Trash Heap (Assisted Jerry Nelson after first season)

Tim Gosley:
- Brool the Minstrel
- Bulldoozer
- Cave's Oldest Fraggle
- Noodlenose Fraggle
- Poison Cackler

Terry Angus:
- Brio the Minstrel
- Morris Fraggle
- Storyteller (Fraggle), The (Except episode 8)

Tom Vandenberg:
- Background Fraggles
- Blustering Bellowpane Monster

Sandra Shamas:
- Fritz Poohbah
- Mavis the Mirror
- Rotary Doozer
- Yeaster Doozer

Mike/Michael Petersen:
- Bailiff Doozer
- Doozer #1
- Fergus Fraggle
- Pedley Fraggle

Lee Armstrong:
- Fiona Fraggle
- Rock Clinger

John Pattison:
- Begoony
- Flying Whoopie Cushion
- Henchy Fraggle (the World's Oldest Fraggle's flunky)

Bob Stutt:
- Avalanche Monster
- Bigmouth Fraggle
- Boober Fraggle (Episode 75 only) (not the voice)
- Felix the Fearless
- Gunge (Episode 78 only) (not the voice)
- Last of the Lily Creatures
- Mirkmonster (body)
- Wander McMooch

Frank Meschkuleit:
- Background Fraggles
- Junior Gorg (From episode 86) (body)

Karen Valleau:
- Background Fraggles

Phil Balsam: (Voice Only)
- Phil Fraggle (voice)

Gerry Parkes: (Live Actor)
- Doc

Fulton MacKay: (Voice or Live Actor)
- Captain (The "Doc" character in the English version of Fraggle Rock)

Michel Robin: (Live Actor)
- Doc (character may have been named differently)

Hans-Helmut Dickow: (Live Actor)
- Doc (character may have been named differently)

Sharon Lee Williams: (Voice Only)
- Aretha (voice)


Thanks to Mr.Vaughn