Ed Valigursky, Agent of the Unknown

I may have mentioned my love for the pulps somewhere in here, especially old covers, and within that by the work of Valigursky (who's apparently still out there somewhere), including for instance this immense golden flying key ring attacking a couple people on the sidewalk of the future:

And my particular favorite, our hero (I guess) in a spaceship cooridor, wearing his underwear on the outside of his pants and using the chain around his wrists to beat the snot out of a bald guy who's holding a Barbie: