In 'The Dark Tower' series, what is the name of the protagonist gunslinger?

The protagonist gunslinger in Stephen King's The Dark Tower series is Roland Deschain of Gilead. Roland is the last surviving gunslinger, a disciplined warrior descended from an ancient line of peacekeepers who combine combat skill, codes of honor, and a duty to protect their society.

The series begins with The Gunslinger, first published in novel form in 1982 after its component stories appeared in magazines. Roland's central mission is to find the Dark Tower, a mysterious structure standing at the center of a vast network of realities. His pursuit takes him across Mid-World and into encounters involving destiny, parallel worlds, the Man in Black, and the Crimson King.

Randall Flagg is a major adversary rather than the protagonist. Jake Chambers and Eddie Dean are important members of Roland's ka-tet, the closely bonded group that travels with him, but neither is the series' central gunslinger. Roland carries two distinctive revolvers and is commonly identified simply as “the Gunslinger,” a title that reflects both his profession and his almost legendary status.