It's a real shame the links between science fiction and superhero comics have been more or less severed (though I hear Orson Scott Card and that Babylon 5 guy whose last name is a million points in Scrabble are writing comics now). Mostly because MY GOD, could you imagine the superhero comic the late Roger Zelazny could have written?
With Croyd Crenson, it's not like you have to imagine too hard.
Mostly I know Alex Toth from his role in the creation of Space Ghost, one the absolute coolest Hanna-Barbera cartoons apart from HERCULOIDS and the HEY THERE, IT'S YOGI BEAR movie.
Challenge of the Superfriends has to rank up there, especially on this board.