First I did not use the term "hybrid", I said pyro cross. Which means, it simply could be a Knob bred out to more northern populations of pyro. But then it could be a product of breeding to other montane kings. Or lastly, even an oddball knob.
Let me give you some background. I have done many many crosses. But that was many years ago. I have also seen most of the montane kings in nature, some hundreds of times. I live in pyro range and have seen them from many populations. I have seen knobs thruout their range.
This individual is a bit stocky. The black cap on the head, with a white dot in the middle, the serated edges to the black, the floating red and black bands, traid count, the width of the the white, the shape of the head. All this is odd for knobs.
Remember, in captivity, patterns/colors tend to migrate, so indeed, it could be just an odd individual. Also, remember, breeding to other pyros not from its exact local is also crossing.
In reality, this individual should not be assigned to a pure form of pyro, even if it is. Its simply a beautiful montane kingsnake and theres nothing wrong with that.
The last thought is, local types are only important in one direction, that is, from the local to nature. They should never be assigned the other way around, from captivity to nature. If a product of captivity in question, then it should be assigned a generic name.
With all that said, there is a population very close to me that has similar individuals, only they tend to have black bellies. Thanks FR