User blog comment:Godzilla1990s/Brink of Armageddon: Age of the Kaiju!/@comment-24632732-20150915193012/@comment-25467982-20150915205352

Yes. Register on the official forums and then post a thread about your kaiju in the "Original Monster Submissions" section.

It is also recommended that you take a look at the "Submitting an original monster" page on the official website here: https://sites.google.com/site/brinkofarmageddonageofthekaiju/submitting-an-original-monster