Bio: Cal Hudson was a close friend of Benjamin Sisko. They served together on Pelios Station, the same posting at which Sisko first met Dax, then hosted by Curzon. Thus, both Jadzia and Ezri have personal memories of Cal Hudson as well.
Cal left Starfleet to join the Maquis. His fate after the destruction of the Maquis and the Dominion War has never been made explicit.
However, his presence in comics postdate his appearances on the televised Deep Space Nine. He was shown to have contacted Sisko after Jake went missing in or around Maquis-contested territory.