Suggestions by @super_wahrrior

Biollante (MonsterVerse)

as Biollante in Godzilla: Final Wars

SpaceGodzilla

as SpaceGodzilla in Godzilla: Final Wars

Manda (Final Wars)

as Manda in Godzilla: Final Wars

Anguirus (Angirasu)

as Anguirus in Godzilla: Final Wars

Rosario Dawson

as Jia in Godzilla: Final Wars

Jet Jaguar

as Jet Jaguar in Godzilla: Final Wars

Gigan (PM)

as Gigan in Godzilla: Final Wars

Lars Mikkelsen

as Wade Tatopoulos in Godzilla: Final Wars

Lady Gaga

as Sarah Tatopoulos in Godzilla: Final Wars

Matthew Broderick

as Nick Tatopoulos in Godzilla: Final Wars

Scylla (Monsterverse)

as Scylla in Godzilla: Final Wars

Methuselah

as Methuselah in Godzilla: Final Wars

Behemoth

as Behemoth in Godzilla: Final Wars

Cyber-Zilla

as Cyber-Zilla in Godzilla: Final Wars

Robert Downey Jr.

as Jackson O'Brian in Godzilla: Final Wars

Brad Pitt

as Wally Simmons in Godzilla: Final Wars

Tom Kenny

as N.I.G.E.L in Godzilla: Final Wars

Tom Hardy

as Sam Brody in Godzilla: Final Wars

Shannon McRandle

as Maddison "russel" Brody in Godzilla: Final Wars

Mega-Kaiju

as Mega-Kaiji in Godzilla: Final Wars