- Accidental Innuendo: 'Giant Size Man-Thing'
- Crazy Awesome: 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.
- Ensemble Darkhorse: Howard the Duck.
- 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.note
- 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.
- Special Effect Failure:
- 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.