On Supernatural, is Sam and Dean's father a demon?!

Question: In one episode Ruby said that all demons were once human. They went to hell, and they came back as demons. Does that mean their dad is a demon?

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Answers: In one episode Ruby said that all demons were once human. They went to hell, and they came back as demons. Does that mean their dad is a demon?

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that's a pretty good question i might have to ask later on myself. i would say yes since John signed over his soul to the yellow eyed demon. in AHBL2 we only see John long enough to help his boys. so if he is a demon, the real question is did he go back to hell or did he escape with the rest of the 200 or so demon's that made it out of the Gate.

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