Before he was irradiated, Korean Godzilla was an un-named crocodile-like reptile. This reptile was 5 meters from

Before irradiated, this is what Korean Godzilla looked like.

the tip of his snout to the tip of his tail and was all grayscale. He was then irradiated, changing almost everything about him, and giving him non-grayscale colors. Korean Godzilla lost his tusks after being hit by the bomb, but still had teeth on both jaws.