Art here is credited to Marie again but also co-credited to one Jay Hawk. Hawk was, in actuality, Jack Katz, a veteran comic artist with a unique scratchy style and recognizable faces on most of his characters. The blue guy here, at least, would seem to have a Katz face.
Jack would never really make it in mainstream Silver Age comics or beyond but he would become a pioneering independent comics publisher when he serialized his own sci-fi epic graphic novel, THE FIRST KINGDOM starting in the mid-seventies.
No idea why he used a pseudonym here but Esposito, as inker, continued to use his also. What, no one wanted to be associated with Subby?