Suggestions by @mikeysplace

Roy Hess

as Roy Hess in The Muppets vs. Godzilla

King Ghidorah (Kingu Gidora)

as King Ghidorah in The Muppets vs. Godzilla

Baby Sinclair

as Baby Sinclair in The Muppets vs. Godzilla

Earl Sinclair

as Earl Sinclair in The Muppets vs. Godzilla

Statler

as Two Guys in a Bar in The Muppets vs. Godzilla

Waldorf

as Two Guys in a Bar in The Muppets vs. Godzilla

Mr. Snuffleupagus

as Snufflegon in The Muppets vs. Godzilla

Camilla the Chicken

as Robot C.H.I.C.K.E.N. in The Muppets vs. Godzilla

Gary Oldman

as Alien Leader in The Muppets vs. Godzilla

Rizzo the Rat

as Shipmate Rizzo in The Muppets vs. Godzilla

Mothra (Mosura)

as Mothra in The Muppets vs. Godzilla

Abby Cadabby

as Tiny Fairy Abby in The Muppets vs. Godzilla

Fozzie Bear

as Fozzie Kong in The Muppets vs. Godzilla

Crazy Harry

as Crazy Weapons Harry in The Muppets vs. Godzilla

Fernando González 'Gonzo'

as Captain Gonzo of the Robot C.H.I.C.K.E.N. in The Muppets vs. Godzilla

Akira Takarada

as The President of Japan in The Muppets vs. Godzilla

Beaker

as Aliens in The Muppets vs. Godzilla

Animal

as King Animal in The Muppets vs. Godzilla

Dr. Bunsen Honeydew

as Dr. Bunsenzawa in The Muppets vs. Godzilla

Sam the Eagle

as Military Commander Eagle in The Muppets vs. Godzilla