Hybrid Beings are half human being and half spirit being.

These are not created by God.  They are "creations" of rebel sons of God or Spirit beings that rebelled against God and intermingled with humanity on earth.  

• These abominations did not have a human spirit, but a hybridized spirit. This is where unclean or evil spirits come from.  
• Like Spirit beings (being half-huma& half NOT human), they are not redeemable like human beings.  When they died there was no place for their spirit to go so they remain on the earth in the spirit realm.  These became the demons or devils (in the plural) or evil spirits that Jesus confronted so frequently during his ministry as recorded in the New Testament.
• The results of the sons of God that took upon themselves the form of human beings and married human women.
• This resulted in a race of giants that were half human and half "god".
  
• They are bound to the "god" that fathered them.  They do not possess free human will -- since they are not human, but hybrid and evil in their very being.
• Recorded in the standard canon of the Bible including the King James version.
• More details provided in The Book of Enoch,  which is not in the standard canon but was read by the apostolic writers (was alluded to many times) and was even quoted directly and verbatim in the Bible.
• Upon death their spirits became "devils, demons or evil spirits" on the earth.

Note: I am aware that the corruption caused by the angels at sinned went beyond intermingling with humanity. All flesh on earth had become corrupted. Of humanity, only Noah and his sons were pure human blood, which is why they were the ones that were saved along with their wives. The scale of destruction that accompanied the great flood was due to much more than Adam and Eve's sin.