John 8 proves Branham's version of "serpent seed" as fallacious.
The fact that the serpent [satan] has a seed but not a biological seed is the issue. Hence the two words employed in the Greek Text.
Those who opposed Yeshua were of the their father [pater] the devil. Yet, they claimed to be the offspring [sperma] of Abraham. That is, by lineage and by genetic breeding. Yeshua agreed with them that Abraham was indeed their father [of his sperma] but they were [nevertheless] "of" the devil.
One of Branham's errors [among many] was that the conjunction "of" indicated biological descent. Not so. Clearly they were of the devil but not of biological descent.
One can be of the "sperma" [literal descent of Abraham] and be "of" their "pater" the devil.
Rev 22 identifies the Old Serpent as the devil, satan.
The many folk tales, Big Foot, "missing link," Kaballah, etc is the stuff of fiction generated by men of UNregenerate minds.
One approaches the fork in the road ... believe the Word and Jesus' exposition or a failed group of folks who are ignorant, fearful, gullible and perhaps, forever deceived.
Even so, come soon Lord Jesus.