The professor only had 12 or 13 adventures, depending on how one counts. (We'll get to that) Here's the first tale introducing our Odd hero...
The professor may have returned to Earth, but only in a geophysical sense. His mind, and his encounters, were never really 'here'...
...and sometimes they were truly Out There...
Even when he tries to involve himself in the world around him, his own warped reality intercedes...
Professor Fiend was an odd creation who didn't last long (again - depending on how you count), but i rather enjoy his demented little world.
(And, yes - we'll get back to those parentheticals)
page art by 'Boris Plaster' from Fantastic Comics #s 1, 2, 7, & 12 (1939, 1940)