Saint-14 is a NPC in Destiny 2.
One of the most famous Titans known (see Helm of Saint-14). He was the first Titan Vanguard, the right-hand of the Speaker (who referred to as Father) and a friend of Osiris. He led a one person crusade against the Fallen, fighting them everywhere and throughout the system. He was a very key player during the Battle of the Six Fronts.
The Fate of Saint-14
Saint-14 died in the Infinite Forest after a specific Vex Mind was made and tuned to their Light. This mind stripped Saint-14 of his Light. Saint fought the Vex for centuries within the Forest, destroying countless legions and incarnations of them.
The body of Saint-14 can be found within the Simulated Future, laid to rest above the melted husks and shells of all the defeated Vex.
The Perfect Paradox
The shotgun, The Perfect Paradox was given to Saint-14 by the Guardian. The Guardian has been the inspiration for Saint-14 and their crusade. This gun is one that Saint-14 eventually returns to the player after their death in the Infinite Forest.