X-Plus Sanda by chimply kaiju
As children my brother and I watched War of the Gargantuans a ton and somehow got another movie mixed in with it and thought that there was indeed a whole alternate ending to the movie including a white Gargantuan who lost his arm fighting a whole horde of brown ones.
It's weird how stuff like that happens, because I have memories of that movie which didn't exist as clear as memories of things that did.
Years later I found out Frankenstein conquers the World is the Gargantuan and still don't entirely understand it. But it's cool none the less. Never seen figures of them before.