Origins of characters whose name contains “John Probe”

IssueTitleNotes
12000 A.D.1st Appearance of John Probe; 1st Appearance of Tharg; Origin of John Probe; Includes space spinner
1/A2000 A.D.1st Appearance of John Probe; 1st Appearance of Tharg; 1st appearance of Tharg; Origin of John Probe; Missing space spinner