Grunchlk is first seen in “Die Me, Dichtomy”, where Moya is brought to his facility to treat burn wounds she had sustained during the “Liar, Guns, and Money” three-parter. Grunchlk also agrees to have the Diagnosan remove the neural chip from John's brain. Scorpius, signaled by Harvey after the neural clone briefly took control of Crichton's body, formed a deal with Grunchlk that would have him give Scorpius the neural chip in exchange for payment. When Scorpius arrives alongside a squad of Peacekeeper commandos, Grunchlk sets a cryogenic pod containing a Scarran agent to thaw as insurance against Scorpius, planning to stop the pod from thawing should Scorpius live up to his end of the bargain.