Vadel Torvin was a male Trill and a doctor with the Trill Symbiosis Commission. In 2371, when it appeared that Jadzia Dax was dying, Doctor Renhol asked a nurse to have Doctor Torvin prepare a new host for surgery to he joined to Dax. Benjamin Sisko and Julian Bashir soon arrived and Sisko told Renhol that Torvin would not be needed, as they had discovered that more Trill were capable of being joined to symbionts than the Commission indicated. (DS9 episode: "Equilibrium")