Qol was a Ferengi who claimed to be a member of the Ferengi Trade Mission when he boarded the USS Enterprise-D in 2368. Qol and Par Lenor came aboard the Enterprise-D after destroying their own shuttle in a deception designed to convince the Enterprise-D to take them aboard.
Qol and Lenor were actually interested in the cargo of the Enterprise-D, Kamala, an empathic metamorph. Shortly after boarding the vessel Qol conducted scans of Kamala in cargo bay 4. In doing so he disturbed the safety measures in place and caused the premature emergence of Kamala.