I think Marvel’s Mister Hyde is easily one of the creepiest villains in their ranks of baddies! He’s a more fucked up version of the Banner/Hulk dynamic and he even wears a weird ass old school suit and  cape like the original literary character. The dude can go head to head with The Incredible Hulk and is one of the loosest cannons in all of Marvel comics! I have always adored the cover of The Amazing Spider-man #232 and think its a certifiably sinister depiction of the villain! Brilliantly drawn by Al Milgrom and John Romita Jr way back in 1982- Hyde is a perfect villain for the Halloween season!