Nightmaster

Rock singer turned occult avenger, James "Jim" Rook, was the Nightmaster. Wielding the Sword of Night from the land of Myrra, he became a member of Shadowpact.

Before he became a hero, Jim Rook was the lead singer of The Electrics, a rock band, who entered a run-down shop named Oblivion Inc. Inside, he was somehow transported to the strange dimension Myrra, where he was the descendant of the mighty Myrra warrior Nacht. He took his ancestor's Sword of Night, a sword with the ability to warn of danger and force a person to speak the truth (much like Wonder Woman's lasso), and became involved in the conflict between Myrra and the evil warlocks. After his adventures in Myrra, he opened a bookstore in the Oblivion Inc. and became active with other superheroes Primal Force and Swamp Thing. He was also good friends with Bobo, also known as Detective Chimp. He also taught the Blue Devil to master his powers and become a hero.

Before the Riverrock, Wyoming incident, Jim was the proprietor of a mystical pub called the 'Oblivion Bar'. It existed in its own dimension, with its own rules and methods. For example, the bar's phone does not work unless the dimension's area code is known.