Varan

Varan is a giant monster that has a turtle shell, a flying squirrel flap pair, and sharp fangs. He is seen in Varan, the Unbelievable as the only kaiju present. He also appeared in Destroy All Monsters for a very breif moment. This short appearance is debatable whether Varan is just used for the movie so it could have more monsters, but the real reason is that his suit had deteriorated from age.