Suggestions by @axiomman

Ashly Burch

as Scarlett in GI Joe

Travis Willingham

as Duke in GI Joe

Keith David

as Matthew Vaught in Godzilla vs Gamera

Diane Guerrero

as Lea Vergara in Godzilla vs Gamera

Shioli Kutsuna

as Asagi Kusanagi in Godzilla vs Gamera

Shin Godzilla

as Shin Godzilla in Godzilla vs Gamera

Grant Gustin

as Nick Tatopoulos in Godzilla vs Gamera

Satomi Ishihara

as Miki Serizawa in Godzilla vs Gamera

Tadanobu Asano

as Dr. Goro Maki in Godzilla vs Gamera

Yutaka Takenouchi

as Harou Sakaki in Godzilla vs Gamera

Gamera

as Gamera in Godzilla vs Gamera

Godzilla

as Godzilla in Godzilla vs Gamera

Shin Godzilla

as "Project G" in Godzilla: Garden of Eden

Yutaka Takenouchi

as "Project G" in Godzilla: Garden of Eden

Tadanobu Asano

as "Project G" in Godzilla: Garden of Eden

Spoiler

as "Project G" in Godzilla: Garden of Eden

Godzilla

as Godzilla in Varan

Jet Jaguar

as Jet Jaguar in Varan

Biollante

as Biollante in Varan

Megalon

as The Murals uncovered within Mu in Gamera: Wrath of Legion