Are those feathers on his legs? How many toes does he have?
He's definitely a mixed breed, and one parent was barred. I'm just wondering if the other parent was maybe something like a Faverolle. That would explain the beard/muffs, feathered legs that are not dark like an ee/ameraucana............but not that comb.
How about an olive egger? Ameraucana or Easter egger mixed with cuckoo Marans....I think that could fit. Cuckoos often don't have heavily feathered legs, if the ee/amer parent was maybe splash would explain the blue color.