Board Thread:General Discussions/@comment-30161070-20161112173042/@comment-29421682-20170102010229

The Vortaak, salvaging technology from the original MechaGodzilla as well, did build their own version as well. It's base model would be the 1975 MechaGodzilla.

MechaGodzilla II, in the story, was a Kiryu-prototype that was proven to be unstable, but when the Vortaak lauched their invasion between the two worlds, they brought it out of storage, fixed the instability issues, and sent it into battle alongside Kiryu against the space monsters.