Grom was a Keskian male, a Starfleet Intelligence Operative, and the head of Section 31.
In 2409, Grom was responsible for a series of events involving the death of several former members of Task Force Fontana. He was responsible for the death of Commodore Mitchell Race and the destruction of the USS Jarvik.
Grom was captured by members of the ACI while attempting to erase any record of his involvement. He was tried and found guilty of his crimes. ((Episode: The Hexagon Action, Pts. I & II)