Deathstroke, the Terminator #26

Deathstroke faces a primal threat in this 1993 DC issue, with a ferocious lion lunging at the silver-haired mercenary on a rugged, rocky landscape — the "Call of the Wild!" tagline says it all. Mike Zeck's cover work is viscerally dynamic, capturing Slade Wilson bare-chested and knife in hand as he strains against the big cat's full-force attack. Written by Marv Wolfman with interior art by Steve Erwin, this is one of those covers that makes it hard to put the book back on the shelf.