Issue · Marvel Comics The X-Men (1963) #20: I, Lucifer... Released Mar 3, 1966 USD $0.12 36 pages The X-Men face a new menace in their battle against evil. LettererArtie Simek InkerDick Ayers EditorStan Lee PencillerWerner Roth Next in The X-Men (1963) #21 · From Whence Comes... Dominus? Apr 5, 1966 #22 · Divided We Fall! May 3, 1966 #23 · To Save a City Jun 2, 1966 #24 · The Plague of... the Locust! Jun 30, 1966