Jack Kline is the son of Kelly Kline and what other character in Supernatural?

Jack Kline is a Nephilim who is the son of Lucifer and Kelly Kline. He is the first and only known Nephilim to be sired by an Archangel. He was taken in and trained by Sam and Dean, who taught him how to master his powers in the series

Asked by Ben Jenkins · Last updated 2 years ago · 122.7K views