I think he has some polish in him. I had a polish hatch with a comb like that once and the crest lends to polish too. The rest is a mystery! Interesting looking guy though.
First thing that popped into my head was silkie x white faced black spanish. But I don't know where the rosecomb came from. Do the spanish have rosecombs?
I think he's perty and really unique!
He's not an average looking rooster, that's for sure.