Teneke Hsiao is Maggie's father. Even though she
was his daughter, he cast her out of the family
when it was discovered that she was Nephilim.
His wife, Catherine, left him and returned to
England because of this. He has not contacted her
since, or tried to reconcile.
Hsiao is responsible for Hendrickson's existence
and his obsession with the Winchesters. He has a
special hatred for the children like Sam.
When his son died, leaving no one to tend the
ancestral fires, he sought out Jack, and lured him to