Reck Cyl was a Trill professor of forensic science who was the host of the Cyl symbiont after Neema Cyl.

Reck continued the work of Neema in the investigation of the parasite that Audrid Dax had encountered and had killed Jayvin Vod, Neema's father. After Reck died, Cyl was joined with Elista Cyl. (DS9 novel: Unity)