Deep-Six (G.I. Joe, Malcolm R. Willoughby)
Deep-Six (G.I. Joe, Malcolm R. Willoughby) appears in 25 issues in grailworth's catalog, and was first published in 1984. First appearance: G.I. Joe, A Real American Hero #25 (1982), cover dated 1984.
First appearance
Every appearance we value
Danger Girl / G.I. Joe (2012) 1 issue
G.I. Joe Yearbook (1985) 2 issues
Character appearances from the Grand Comics Database, CC BY-SA 4.0.