Don Borden was an agent of the State Department's counter-intelligence division.[1] He lived in Washington, D.C., at the Arnold Apartments.[2]

During the 1940s, Borden was the fiance of socialite Sandra Knight. He was one of the few people to learn, after a few adventures, that Sandra was also the costumed crime fighter known as Phantom Lady.

  • This version of Donald Borden (Quality Universe), including all history and corresponding appearances, was initially erased from existence following the collapse of the original Multiverse in the 1985–86 Crisis on Infinite Earths limited series. However the ending of Convergence retroactively prevented that collapse, saving all the alternate realities, though in an "evolved" form. Even though versions of the character may have since appeared, this information does not apply to those versions.