Stijen Yol was a red haired joined Trill in the late 24th century, and was host to the Yol symbiont.


From at least 2370, Yol was a field agent of the Federation Department of Temporal Investigations.

Shortly after stardate 47391 in 2370, Yol debriefed Lieutenant Worf of the USS Enterprise-D following his encounter with a quantum fissure. As there was very ambiguous evidence of the Klingon's shifts into parallel timelines, Yol questioned Worf's word that the incident had occurred, earning him no small amount of anger.

In 2381, Yol served as a weapons instructor to DTI recruits and taught Teresa Garcia, amongst others, how and when to use a phaser.

Early in 2382, he briefed Captain Alisov of the USS Everett prior to an urgent DTI mission to Tandar Prime. (DTI novel: Watching the Clock)


DTI personnel
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