Mister Machine (Aaron Stack / X-51)
Mister Machine (Aaron Stack / X-51) appears in 3 issues in grailworth's catalog, and was first published in 1977. First appearance: 2001, A Space Odyssey #8 (1976), cover dated 1977.
First appearance
Every appearance we value
2001, A Space Odyssey (1976) 3 issues
Character appearances from the Grand Comics Database, CC BY-SA 4.0.