Mountjoy
Mountjoy (typically from Earth-1191, Marvel) appears in 6 issues in grailworth's catalog, and was first published in 1994. First appearance: Bishop #1 (1994), cover dated 1994.
First appearance
Every appearance we value
Bishop (1994) 4 issues
Excalibur (1988) 1 issue
Character appearances from the Grand Comics Database, CC BY-SA 4.0.