The X-Men (vol. 1) #12 (July 1965):
“The Origin of Professor X!”
by Stan Lee, Jack Kirby, Alex Toth, Vince Colletta

The X-Men (vol. 1) #12

Title: “The Origin of Professor X!”

Medium: comic

Cover date: July 1965

Publisher: Marvel
Written by: Stan Lee
Art by: Jack Kirby, Alex Toth, Vince Colletta

19 characters in this story:

(Click links for info about character
and his/her religious practice, affiliation, etc.)
Pub. #
Professor X Professor X (Charles Xavier)
(lead character)
hero scientist
CBR Scale: S religious
Brotherhood of Mutants; Genoshan Excalibur...  Marvel 4,999
Cyclops Cyclops (Scott Summers) hero
CBR Scale: SCBR Scale: I Protestant; mutant supremacist
Brotherhood of Mutant Supremacy; Summers Rebellion...  Marvel 8,371
The Beast The Beast (Hank McCoy) hero scientist
CBR Scale: ICBR Scale: S Episcopalian; agnostic
Academy of Tomorrow; Brotherhood of Mutants...  Marvel 5,233
Phoenix Marvel Girl (Jean Grey) hero
CBR Scale: I Episcopalian
Metro College; The Twelve...  Marvel 1,905
Iceman Iceman (Bobby Drake) hero
CBR Scale: I Jewish Catholic
Secret Defenders; Spider-Man and His Amazing Friends...  Marvel 1,752
Angel Angel (Warren Worthington III) hero
CBR Scale: I Episcopalian
Academy of Tomorrow; Horsemen of Apocalypse...  Marvel 1,741
Juggernaut Juggernaut (Cain Marko) villain hero
CBR Scale: I Christian (denomination
Brotherhood of Mutants; Excalibur...  Marvel 387
U.S. Army U.S. Army
supporting character group real/historical person
  [military unit] Marvel DC 1,801
Xavier Institute Xavier School for Gifted Youngsters supporting character group
  [high school] Marvel 373
Kurt Marko Kurt Marko
supporting character scientist
  [Juggernaut's father; Charles Xavier's step-father] Marvel 17
Cerebro Cerebro villain
CBR Scale: I N.A.
[Xavier's mutant-finding machine, given sentience by Bastion] Marvel 9
Sharon Xavier Marko Sharon Xavier Marko
supporting character
  [Charles Xavier's mother] Marvel 64
X-Men X-Men hero group
  [1st app: The X-Men (vol. 1) #1 (Sep. 1963)] Marvel 9,958
unnamed clergyman supporting character clergy/religious leader
CBR Scale: D Christian (denomination
[1st app: The X-Men (vol. 1) #12 (July 1965)] Marvel 1
unnamed X-Mansion staff
supporting character group
  [butler; maid...] Marvel 1
Alamogordo Alamogordo supporting character group
  [nuclear testing facility] Marvel 2
Cyttorak Cyttorak
CBR Scale: D deity
[source of Juggernaut's power] Marvel 9
Cyttorak Guardians
(behind the scenes) 
villain group
CBR Scale: D Cyttorak worshippers
[guardian] Marvel 2
Brian Xavier Brian Xavier
supporting character scientist
  [Charles Xavier's father] Marvel 3

Reprints of this comic:
X-Men (vol. 1) #67 (Dec. 1970): "The Origin of Professor X!"