Heartlessly aggressive chickens, what breed?

[BlackHackle]

Hi everyone! I had bought Russian Orloff chicks to add to my Russian lines and some ended up being these ridiculously heartless chickens. They attack you nonstop. Here is a list of breeds they could be from, but which one is it?

Dark Cornish
Dark Assils
Black Breasted Red Malay
Shamos

 

[itspebbl]

I believe they are Dark Cornish. They are way too meaty and not wiry enough to be any of the other breeds

 

[BlackHackle]

I believe they are Dark Cornish. They are way to meaty and not wiry enough to be any of the other breeds

Thanks for the input, that was my original guess. They look a lot like Cornish, especially the one in picture #4. That head shape is really reassuring

 

[itspebbl]

 

[BlackHackle]

Good grief this bird is looking mysterious!!!