You're looking at the big guys there

Those are either O shamos or Chu Shamos. Often just called Shamos here. There are bantam versions of those too, just called bantam Shamos.
Ko Shamos are different. They are a totally separate breed. They are true bantams; there are no large fowl counterparts to them.
They were never actually used for fighting. They are still oriental games, so they are feistier and more game than other breeds. Which is what I like about them. They have huge personalities in little bodies. They are not afraid of people at all, and don't back down from a challenge.
However they only weigh two pounds at most, lol. They are not aggressive to people and can be introduced to each other safely with some work. I've had them for several years now and adore them. They're my show chickens.
If you're interested I started a thread about the breed here:
https://www.backyardchickens.com/threads/the-ko-shamo-thread.1278977/
Now that said, Velociraptor IS my taste in chickens, lol, and I would own the Shamos in a heartbeat too if I had the space.