"A Spaceman-at-Work Feature" from Tales of the Unexpected vol.1 #80 (DC, 1963) by Jack Miller and George Roussos
In response to the newly-minted Comics Code Authority, DC started this anthology ("Unexpected" wasn't one of the forbidden words) of science fiction short stories. It premiered such DC "stars" as Space Ranger, Automan and the Green Glob. Yeah, the Green Glob. I wonder where THAT Who's Who entry went to.