Character named Duke (Fallout 4)

I am asking for help from those who may have information about the character named Duke. Met him on the dock, running away from Mister Brave. Before dying from a car explosion, he noticed that he was wearing red T60 power armor and armed with a 10 mm pistol. After loading, this persian disappeared. If anyone can help, tell me what kind of character it is and where you can find it.