Name: John Grey
Other Names: Dr. John Grey; Professor John Grey
First Appearance: The X-Men (vol. 1) #5 (May 1964): "Trapped: One X-Man!"
Number of Appearances: 44
Enemy of: Shi'ar Death Commandos
Occupation: college professor
Worked for: Bard College
Note: Jean Grey's father
John Grey worked as a history professor in the history department at Bard College.
During the "Inferno" incident, he was briefly turned into a demon.
Suggested links for further research about this character and the character's religious affiliation: