Mercurius Singletary

Ensign Mercurius Singletary was a human Starfleet officer. He was born in the year 2348. Singletary was a graduate of Starfleet Academy, class of 2366. His first assignment was as a security officer onboard the USS Righteous.

In the original timeline, Security Chief Coris Sprint was killed a few hours before the Battle of Wolf 359 in 2367. Ensign Singletary took his place on the bridge. During the battle, the Righteous' shields faltered just long enough for the Collective to beam in a lone Borg drone. When the drone accessed the operations control panel, Ensign Singletary tried to isolate the console. However, he did not have the technical knowledge to complete the task. In his frustration, Singletary tried, unsucessfully, to shoot the Borg with his phaser. After being harassed by Dr. Thaddeus Quint, Singletary tried to physically attack the drone. The drone killed Singletary by bashing his head against the console. A few seconds later, the Borg drone destroyed the ship.

When Q transported Cadet Qaylan Furlong back in time from the year 2377 to save the Righteous, Ensign Singletary survived the Battle of Wolf 359 along with the most of the Righteous' crew. (ST video game: Borg)