So these guys have been around for a while, but it seems like they're slowly increasing the pace. You've probably seen the name "Mount Koubou" pop up here and there.
They did "Zuigon" for the Gatchamon set, and "Gaigon" for the Sofvi Monsters set.
More recently, they sold their first independent run of toys at the fall Patchi-Summit in November. There were also one-offs (?) given away at that event. Couple of new sculpts: Rabito and Daigon. Seems like they switched the names as the first Gaigon was displayed as "Buigon"??
From L to R: Daigon, Rabito, Zuigon and Buigon. (Andy- sorry I borrowed your photo. Let me know if you want it taken down.)

Some of the one-offs:


There were also some custom paints by Mount Koubou of the Biliken Shokai kaiju- Pharaos and Riruze- exhibited during the last Superfestival.
The style of their artwork and toys is growing on me- a bit like Anraku or some of the vintage patchi-kaiju minis. Hopefully we'll see more from them at the next Summit and future toy shows. Any of the (far) east-side 'Brainers care to chime in? Anyone bought these by accident and want to offload them? : D