A Starfleet Academy professor and the 32nd-century host of the Dax symbiont.
Illa Dax is a professor at Starfleet Academy and the current host of the Dax symbiont, whose earlier hosts included Curzon, Jadzia and Ezri, all close to Benjamin Sisko. She is played by Tawny Newsome.
When SAM became fascinated with the mystery of Sisko's disappearance, Illa shared with her Jake Sisko's book Anslem and revealed her own connection to Dax and to the Siskos.