Styptic powder will help to stop bleeding. Leave the scabs (natures bandaid) and put some polysporin or neosporin on his comb after he goes to roost. There is a lot of blood in the comb so it will bleed quit a bit after an injury.
Cocks will fight especially if they do not know each other. Also, fighting cocks were used to create BCMs many many years ago so its in their DNA. You may not be able to pen these cocks together.
I have a lot of wild turkeys that live around where I live in North Texas. They are fascinating to watch for sure. Glad you had a Happy Thanksgiving! We have to wait another 5 weeks before our Thanksgiving.
Funny you should mention that about Game being in the makeup of Marans. Dark Halo has become so intolerable that watering him in his pen became very difficult due to his aggression. I was going to work with big chunks bitten out of my hands and arms. So I snatched him out if the pen one day in a rage, intending to cull him then and there, but I put him out on a gamecock hitch instead because hubby wasn't home yet. He has had a major attitude adjustment since then. He thinks he is a Gamecock now. Lol