Giant Vampire Bat Friends

Breed by the Tachyons. They are stated to be decendents of the dinosaurs or at least creatures from the same time period.

A alien race that landed on Earth sixty-five million years ago they breed several monsters at the time before going dormant. In the modern era they have awaken and plan to conquer Earth.

The only survivor from the original Zilla's eggs(before "Godzilla: Final Wars" all Zillas were called Godzilla). Unlike his parent though he gets incredibly violent when threatened or when something bad is going to happen.