Bravo Marine

The Bravo Marine can refer to two individuals (it is unclear if they are intended to be the same individual or not). They were both members of Bravo Team at different points in the Doom Timeline.

Doom Resurrection
The Bravo Marine was the only survivor of the June 2145 Mars City demonic incursion.

Lost Episode
Another Bravo Marine was the sole survivor of the Bravo Team dispatched on November 15, 2145 to stop the next demonic incursion of Mars City.