He first appeared in the trailer to Gears of War 2 where it appeared that Carmine was to be back. Shortly after, it was let slip that it is actually Carmine's brother in Gears of War 2. He also explains that he is the youngest of the his three siblings; all of them in service of the COG army. He believes that honor in battle will bring honor to his family name.

In Gears 2, Benjamin joins Delta Squad early in the game and helps Dominic Santiago and Marcus Fenix through the first half of the game.  He possesses a cheerful attitude and a very academic approach to combat, often to the annoyance of his Delta Squad teammates.  Despite this, his squad becomes very protective of him (especially Dom), and he proves to be a capable soldier.  When Delta Squad is attempting to evacuate out of the destroyed city of Llima, Carmine is hit by gunfire but manages to make it onto the Raven.  However, the giant riftworm appears soon after and bumps the helicopter in mid-flight, sending Carmine down the beasts gullet moments before it turns and swallows the rest of Delta Squad whole, Raven and all.  Delta finds him deep in the riftworm's body, but, despite their best efforts, he fatally mauled by the native parasites. Before succumbing to his wounds, he asked Marcus to tell his family he loves them. Marcus collects carmine's COG tags and a letter to his eldest brother Clay carmine, to be delivered to Ben's family.