Know Thy Enemy, Destroy Thy Enemy
Kregor Thann is the most senior Apothecary serving in the Jericho Reach. He is often found in the Apothecarion researching new chemical and biological agents for uses in healing battle brothers and destroying xenos.
A member of the Red Scorpions, he is given to maintaining the genetic purity of his brethren. This has translated into his near-obsession with concocting new medicines and killing agents. He has a standing policy that all new Apothecaries that come to Erioch should seek him out.