Suggestions by @alan01

Queen MUTO

as Rainha MUTO in Mothra Leo: Wrath of Battra

Battra

as Battra in Mothra Leo: Wrath of Battra

Mothra Leo

as Mothra Leo in Mothra Leo: Wrath of Battra

Charles Dance

as Alan Jonah in Godzilla: Blood Enemy

Tom Holkenborg

as Composer in Godzilla: Blood Enemy

Destoroyah

as Destoroyah in Godzilla: Blood Enemy

Monarch Sciences

as Monarch in Godzilla: Blood Enemy

Mana Ashida

as Miki Saegusa in Godzilla: Blood Enemy

Anguirus (Angirasu)

as Anguirus in Godzilla: Blood Enemy

Methuselah

as Methuselah in Godzilla: Blood Enemy

Biollante (MA)

as Biollante in Godzilla: Blood Enemy

Godzilla

as Godzilla in Godzilla: Blood Enemy

Monarch Sciences

as Monarch in Gamera

Kow Otani

as Composer in Gamera

Zigra

as Zigra in Gamera

Violet McGraw

as Nicole in Gamera

Madeleine McGraw

as Anna in Gamera

Kokoro Terada

as Toru Aizawa in Gamera

Ai Hashimoto

as Asagi Kusanagi in Gamera

Gyaos

as Gyaos in Gamera