In Star Trek: Deep Space Nine, he portrayed the Bajoran scientist Doctor Mora Pol, Odo's guardian scientist in the episodes "The Begotten" and "The Alternate". The Star Trek: Voyager episode "Jetrel" features Sloyan as the title character.
On Star Trek: Deep Space Nine, Sloyan played the Bajoran scientist Doctor Mora Pol, who was Odo's guardian in the episodes "The Begotten" and "The Alternate".  In Star Trek: Voyager, he also appeared as the protagonist in the episode "Jetrel".