Prof Haley (from Challengers of the Unknown)
Prof Haley (from Challengers of the Unknown) appears in 51 issues in grailworth's catalog, and was first published in 1957. First appearance: Showcase #6 (1956), cover dated 1957. Key issues with Prof Haley include Crisis on Infinite Earths #8 (1985).
First appearance
Key issues
Origin
Every appearance we value
Adventure Comics (1938) 1 issue
Challengers of the Unknown (1958) 26 issues
Crisis on Infinite Earths (1985) 1 issue
DC Comics Presents (1978) 1 issue
The Doom Patrol (1964) 2 issues
Secret Origins (1961) 1 issue
Showcase (1956) 4 issues
Solo (2004) 1 issue
Super-Team Family (1975) 2 issues
Character appearances from the Grand Comics Database, CC BY-SA 4.0.