Who's This? The guy from that really cool Eduardo Barreto illustration on page 11 of Who's Who volume V.
How you could have heard of him: Maybe you're confusing him with CAPTAIN Future? (see below)
Example story: Superman vol.1 #387 (1982)
Asterix in Action Comics and Tintin in Teen Titans Spotlight through the 80s.
Hamilton is just a brilliant inventor, initially, but then he drops some coffee on one of those high-voltage NASA ground control consoles and nearly electrocutes himself.
Taking a break from the chase, Superman spies a asteroid that will hit Earth in 75 years and decides to preemptively destroy it. Except it's full of kryptonite, so he can't. So instead, he scoops up lots of unused satellites in Earth's orbit...
TO BE CONTINUED THIS SATURDAY!!!
Who else? Leading up to that entry in Who's Who volume V, we might have had Claw the Unconquered, but versions of him have appeared in a Wildstorm series, in Primal Force, and more recently in Wonder Woman. The Clock King seemed really obscure at the time, but Justice League Antarctica fixed that. Colonel Computron maybe? Why would you require me to read latter-day issues of the Flash? That's not human! But looking ahead, I think Who's This? is about to feature its first VILLAIN. Stay tuned!