Ramira

From Memory Alpha, the free Star Trek reference.

You may also be looking for the MACO Romero.

Ramira was one of the MACOs assigned to Enterprise during the Xindi mission.

On February 13, 2154, Lieutenant Malcolm Reed asked the MACOs for volunteers to join the mission to board the Xindi superweapon. All the MACOs volunteered, so Reed chose Ramira, M. Forbes and W. Woods. Ramira was fortunate enough to survive. (ENT: "Countdown", "Zero Hour")

Ramira was played by an unknown actor.