Greb H'rokel
Greb H'rokel was Dopterian accountant working for the Orion Syndicate on Starbase Geneva.
In 2403, he managed to alter Starfleet records to make it appear as if he was a member of the crew of the USS Hades. As a result of his actions, the Orions ordered his assassination. the assassin that accepted the assignment was Crel.
The initial assassination attempt was carried out by sabotaging an environmental subsystem, which exploded- injuring but not killing the fake Hades crewman.
When a second attempt was made on the crewman's life in sickbay, it became apparent that someone was trying to assassinate the Dopterian member of the crew.
An investigation was opened and when the remains of an Orion Disruptor Grenade were found, all indications pointed to the Orion Syndicate.
Baylon Trinin managed to infiltrate the organization on the station to a lesser degree, but it was enough to allow the other members of the Hades crew to locate and deal with Crel. in that effort, the true identity of Greb H'rokel was also revealed.
The Dopterian was arrested and sent to a penal facility for the crime of impersonating a Starfleet officer.
Greb H'rokel was first seen in the USS Hades mission: Shore Leave