G-Man is an unpublished strip created by Pat Mills with…

G-Man is an unpublished strip created by Pat Mills with artist Bryan Talbot. According to Bryan Talbot, G-Man was "one of the strips in a dummy magazine produced by Emap called Heroes, a rival to 2000AD".

Over on the Arch Deviant, Pat Mills illustratired bibliography you can find the whole strip: I published the cover to G-Man here some time ago.