Giant-Size Man-Thing issue #3 & Man-Thing Vol. 1 issues #21-22: Klonus and Mortak are, respectively, an Evil Sorcerer and brutal warlord from another dimension. Seeking godhood, the two usurp the throne of Katharta, murdering its king and slaughtering its defenders and people while giving the women of the kingdom to Mortak's soldiers for their vile pleasure. Seeking to sacrifice Prince Korrek, the two are defeated, only to return as servants of the demon Thog in an attempt to drive the entire cosmos to madness.
Giant-Size Man-Thing issue #5's "There's a Party in 6G!": Ehrthold is a lesser demon whose name, derisive among his kind, means something horrifically wicked for the humans he preys upon: "Devourer of Babes". Ehrthold rewards those who summon him with delights only should they brutally murder infants for him to feed upon, and when one cult botches the summoning when Man-Thing intervenes, Ehrthold has no issue leaving their leader to burn to death and killing those in his way.
General Selbert is the corrupt head of Project Glamor. In an attempt to duplicate the Super Soldier Serum, or "The Juice", Selbert runs every corrupt dealing he can, financing misery and death all over to reap profits and craft Project Glamor, where a supposed Satanic cult kidnaps victims to be used as fodder for nightmarish experiments that see their flesh warped and the victims in unbelievable agony before they succumb to death. Frustrated with a lack of progress, Selbert has Dr. Railsback made into an experiment himself before attempting to murder any who might expose the program.
Dr. Laurence Railsback, the chief scientist of Project Glamor, is the man in charge of carrying out all its atrocities. Having abductees brought to him, Railsback injects them with his serum to deform their bodies, leaving them in horrendous agony before expiring. With no remorse, Railsback just continues moving on to the next victims until Selbert has him "replaced", prompting the mutated Railsback to go on a brutal spree to murder the general.
Crazy Is Cool : The mere concept of Man-Thing as a member of a superhero team... and their transportation. To the point that he lives in a chunk of his swamp in the bottom of The Raft prison.
Moral Event Horizon: The Mad Viking killing his own granddaughter because she disagrees with his beliefs.
My Real Daddy: Len Wein had a hand in both Swamp Thing and Man-Thing, but the former is best remembered for Moore's run, and the latter for Gerber's.
Older Than They Think: Introduced the Marvel Multiverse, about ten years before Alan Moore played with the concept in his Captain Britain books. Over the years the concept of the multiverse being a spectrum (with one end being the best possible world, and the other being the worst possible world) was abandoned. However, the concept of a spectrum multiverse was revived in the early 2000s by Warren Ellis' shortlived X-Man run, which dealt heavily with the concept of a multiversal 'spiral' of worlds and the ability of both Nate Grey and his enemies to travel up and down it. note The worst possible world is known as Somnius. Yes, that Somnius.
Ugly Cute: Especially in Thunderbolts, Man-Thing has very expressive eyes which, combined with the tendrils of his face, just sort of make him look adorable.
The Woobie: To put it simply, Man-Thing's life sucks. He was turned into a terrifying monster, can rarely (if ever) socialize with others because if they get scared by anything he'll burn them, he constantly gets dragged into bizarre adventures when he just wants to walk around his swamp, and most of the people he's ever been close to are dead by now.
Also getting his mind and memories back always makes things even worse for him. He either feels fear and gets incinerated by his own powers or loses his ability to properly control his teleportation powers.
When Steve's corpse is shown, his actor is clearly breathing.
The CG on Man-Thing itself is mostly good, except for the red firefly-things in its eyes.
Squick: Nearly all of the deaths, which involve Man-Thing using his tentacles to pump people full of rapidly growing plant matter that causes things like vines and branches to explode out of them.
