Dave Goelz. Dave Goelz was 48 in Muppet Classic Theater as 'Gonzo / Rizzo the Rat / Randy Pig (voice)'.Jerry Nelson. Jerry Nelson was 60 in Muppet Classic Theater as 'Robin the Frog / Montague the Rat / Big Bad Wolf (voice)'.Steve Whitmire. Steve Whitmire was 36 in Muppet Classic Theater as 'Kermit the Frog / Rizzo the Rat (voice)'.Frank Oz. Frank Oz was 50 in Muppet Classic Theater as 'Miss Piggy / Fozzie Bear (voice)'.Bill Barretta. Bill Barretta was 30 in Muppet Classic Theater as 'Elvis (voice)'.Julianne Buescher. Julianne Buescher was >> in Muppet Classic Theater as 'Yolanda the Rat (voice)'.Brian Henson. Brian Henson was 30 in Muppet Classic Theater as 'Andy Pig / Mink in 'Gotta Get That Name' (voice)'.Bruce Lanoil. Bruce Lanoil was 34 in Muppet Classic Theater as 'Additional Muppet Performer (voice)'.Allan Trautman. Allan Trautman was 39 in Muppet Classic Theater as 'Papa Pig / The Banker / The Royal Doctor / Villager (voice)'.David Grossman. David Grossman was >> in Muppet Classic Theater as 'Director'David Lawrence. David Lawrence was >> in Muppet Classic Theater as 'Music'Patricia Silversher. Patricia Silversher was >> in Muppet Classic Theater as 'Songs'Philip Balsam. Philip Balsam was 50 in Muppet Classic Theater as 'Songs'Michael Silversher. Michael Silversher was >> in Muppet Classic Theater as 'Songs'