User blog comment:Kogath/Monster Hunter Frontier G8 Discussion/@comment-184612-20150617050855/@comment-6050823-20150617161859

I also just noticed that they left a few hints about what the other two main series monsters are.
 * The monster appearing in October was mentioned to be blue in color, which leads many to believe it maybe Brachydios.
 * The monster appearing in August was mentioned to seemingly swallow things.