- Script
- Roy Thomas (credited)
- Pencils
- Don Heck (credited)
- Inks
- George Tuska (credited)
- Colors
- ?
- Letters
- Sam Rosen (credited)
- First Line of Dialogue or Text
- Midnight! ... and a rolling, rumbling subway...
- Genre
- superhero
- Characters
- X-Men [Angel [Warren Worthington III]; Beast [Hank McCoy]; Cyclops [Scott Summers]; Iceman [Bobby Drake]; Marvel Girl [Jean Grey]]; Vera Cantor (guest); Changeling (guest, impersonates Professor Xavier); Grotesk (villain, introduction, also in flashback as Prince Gor-Tok); King Krono (villain, introduction, death in flashback); Zelda Kurtzberg (guest); Princess Ingar (villain, introduction, death in flashback); Dr. Hunt; Mr. Chalmers
- Synopsis
- A subterranean race was destroyed by underground atomic tests and the lone survivor, Gor-Tok, seeks revenge against those responsible - humans.
- Reprints
-
in Fantastic! (IPC, 1967 series) #80 (24 August 1968) [artwork reworked as cover], #80 (24 August 1968) [part 1], #81 (31 August 1968) [part 2] -
in Hit Comics (BSV - Williams, 1966 series) #103 -
in Strange (Editions Lug, 1970 series) #41 (5 mai 1973) -
in The X-Men (Marvel, 1963 series) #89 (August 1974) -
in Spidey (Editions Lug, 1979 series) #57 (10 octobre 1984) -
in Marvel Special (Marvel Italia, 1994 series) #15 (Dicembre 1998) -
in Marvel Masterworks: The X-Men (Marvel, 2003 series) #4 ([October] 2004) -
in Essential Classic X-Men (Marvel, 2006 series) #2 (2006) [black and white] -
in Marvel Masterworks: The X-Men (Marvel, 2009 series) #4 (2011) -
in The X-Men Omnibus (Marvel, 2009 series) #2 (2011) -
in X-Men Epic Collection (Marvel, 2014 series) #2 - Lonely Are the Hunted (2016)
- Keywords
- Archer College; nuclear oscillotron
Changeling is disguised as Professor X.
- Script
- Roy Thomas
- Pencils
- Ross Andru (illustrations)
- Inks
- George Roussos (illustrations)
- Colors
- ?
- Letters
- typeset
- Characters
- Beast; Cyclops; Iceman; Marvel Girl
- Reprints
Letters from: Frank Hembeck, Rick Ellrod, Bobby Wilson, Saul David, Guy H. Lillian III, Loren MacGregor, and Douglas Dams.