Jackhammer
Jackhammer (Marvel) appears in 3 issues in grailworth's catalog, and was first published in 1975. First appearance: Daredevil #123 (1964), cover dated 1975.
First appearance
Every appearance we value
Captain America (1968) 1 issue
Daredevil (1964) 2 issues
Character appearances from the Grand Comics Database, CC BY-SA 4.0.