Grun, the Green Terror
Chuck Dixon (writer), Sam Glanzman (pencils and inks)
Published in the solo issue of G-8 and His Battle Aces, 1991.
According to comics.org: "Plot based on the 63-page novella by Robert J. Hogan, published in the pulp magazine G-8 and His Battle Aces [Vol. 20 No. 4, May 1940]."