He's The Director of Hatcheries and Conditioning. He's a highly regarded Alpha male who enjoys taking people on tours of the hatchery. However, he has a shadow self; he once had a relationship with Linda. This relationship ended with him leaving her, pregnant, on the reservation. This makes him John's father. When John arrives in London and addresses him as such, he is horrified (not to mention humiliated) and his useful life is over.
He is also included to show that not all conditioning is perfect --- which is interesting because he is the D.H.C. and you would think he would be perfectly "done."