Soldier (The Blood Line)
From Tardis Wiki, the free Doctor Who reference
This Young Male Soldier was part of a unit led by Captain Federico Santos to aid Rex Matheson and Esther Drummond in stopping the Miracle in Buenos Aires. He was infact an agent of the Three Families. When he was in a van with the other soldiers, he started praying in Spanish before detonating a bomb which destroyed the van and everyone inside, along with a collection of Jack Harkness' mortal blood, which was vital in stopping the Miracle. This soldier became a category one shortly before the miracle ended, where he presumably died. (TW: The Blood Line)