Captain Vaughan is a character who appears in Titanfall. He's the captain of a squadron of the Interstellar Manufacturing Corporation who appears in the campaign mission "The Battle of Demeter." He drops down with IMC pilots and charges towards hardpoint B on foot. He usually gets killed but can be saved and protected till the end of the game. He usually takes down several grunts before falling to enemy fire.
He can also order grunts around during the battle if he is alive long enough. He also compliments the pilots if they kill an enemy in front of him, or will thank you if you save him from death.