Starman is Jack Knight, a comic book superhero in the DC Comics universe, and a member of the Justice Society of America. He is the son of the original Starman. Created by James Robinson and Tony Harris, he first appeared in Starman #0 (October 1994). Starman is also the name of the popular comic book series chronicling Jack Knight's adventures, which ran from #0 to #80 (2001).

Jack is the son of Ted Knight, who, as Starman, was one of Golden-Age super-heroes. Although he was fascinated by his father's heroic life as a child, he became more and more rebellious as he grew older. By the time he reached adulthood, Jack was disdainful of his father's past.

Although he apparently studied art, and had some talent, Jack's true passion was collectables. He would eventually become the owner and operator of a antique and collectable store. Jack's older brother David was the one who took over his father's mantle.

Sadly, David was murdered by the son of the Mist, one of his father's old arch-foes. The Mist then attempted to murder Jack as well, who narrowly escaped by using one of his father's old cosmic rods. Jack was resolved to track down The Mist out of a desire to protect his father. He would eventually kill the Mist's son in battle and capture both the Mist and his daughter Nash, who vowed revenge. The Mist himself succumbed to dementia after the death of his son.

Jack would reluctantly agree to become Starman if his father would agree to devote his "cosmic energy" to the betterment of mankind. There would be no costume for Jack, however. He wore his street clothes; the only accessories being his cosmic staff and goggles to protect his eyes from the glare.

Jack operated out of Opal City , and had a few allies. First, there were the O'Dares, a family of Opal police officers. He also rescued Mikaal Tomas, an alien that had briefly operated in New York under the name Starman during the seventies. Jack's most intriguing ally was The Shade, an immortal Golden-Age super-villain who aided Jack simply because he considered Opal City his home and wanted it to remain quiet. Over time, it would be questioned whether or not The Shade's motives were more noble than he let on.

The Mist's daughter Nash would return as the new Mist in an attempt to become Jack's archfoe. She would drug Jack and force him to impregnate her during a hellish crime wave. She would eventually give birth to Jack's son.

Jack also fell in love with a woman he knew as Sadie. When she revealed that she was the sister of Will Payton, yet another hero to bear the name of Starman, he vowed to set off into space to find her missing brother.

After his return, he would face almost all of his foes in a massive battle that nearly destroyed Opal. During the battle, Jack's father sacrificed himself to save the city. Following his father's death, Jack retired and took his son to live with him in San Francisco.

It is unknown what Jack is doing now, but it is presumed he is painting, living with Sadie, and raising his son (and, by now, his daughter, who was mentioned in Sadie's letter). He has passed his cosmic rod onto The Star-Spangled Kid II, who currently operates with the Justice Society, and now calls herself Stargirl.