Suggestions by @mikeysplace

SpaceGodzilla

as SpaceGodzilla in Monster Jam (1996)

Kenpachirō Satsuma

as Godzilla (Suit) in Monster Jam (1996)

Takateru Manabe

as Gamera (Suit) in Monster Jam (1996)

Rodan (Radon)

as Rodan in Monster Jam (1996)

Akira Ifukube

as Themes in Monster Jam (1996)

Maureen Blumhardt

as Maureen Blumhardt in Monster Jam (1996)

King Kong

as King Kong in Monster Jam (1996)

David Spade

as Rick in Monster Jam (1996)

MechaGodzilla

as Mechagodzilla in Monster Jam (1996)

Gorosaurus

as Gorosaurus in Monster Jam (1996)

James Earl Jones

as The Vortaak King in Monster Jam (1996)

Mothra (Mosura)

as Mothra in Monster Jam (1996)

King Ghidorah (Kingu Gidora)

as King Ghidorah in Monster Jam (1996)

Gamera

as Gamera in Monster Jam (1996)

Haruo Nakajima

as Audience Member #2 in Monster Jam (1996)

Akira Takarada

as Audience Member #1 in Monster Jam (1996)

Anguirus (Angirasu)

as Anguirus in Monster Jam (1996)

Godzilla Junior

as Godzilla Junior in Monster Jam (1996)

Rick Baker

as King Kong (Suit) in Monster Jam (1996)

Chris Columbus

as Writer in Monster Jam (1996)