sorry for el doubleposto-
Nah – they cross paths with Groo often enough, but they’re not obsessed with taking him down the way a proper arch-nemesis would.
Catwoman is a thief. The Joker is a psychotic, sociopathic mass murderer. Catwoman loves Batman and doesn’t want to hurt him. The Joker loves Batman and wants to torture him to death. The Joker killed Robin and crippled Batgirl. If Batman can handle him easily, I’ve never seen him do it.
Bizarro is most definitely not Superman’s nemesis. Though they have fought, their friends most of the time. Superman aided Bizarro #1 in the creation of Bizarro World. It was Superman who made Bizarro World a cube. In addition, Bizarro has never been a serious threat to Supes. Bizarro may be Supes equal in the super power department, but he has no skill in using those powers. Lex Luthor OTOH has brains, resources and has devoted his life to killing Superman.
What about Darksied (I’m pretty sure I misspelled that, I don’t really read Superman) as Superman’s nemesis? I mean, from what I understand, this guy can whipe the floor with Superman and is bent on taking him out and destroying Earth. For a nemesis, I generally feel that taking out the hero needs to be primary target number one, so this may fall short seeing as Earth seems to be his big prize, but Luthor is the same way. He’s just trying to control it from a more political/financial aspect. D is also the only one I’ve known Superman to seriously want (and I believe even attempt) to kill. Unsuccessfully, yes, but still, to push the big guy that far…
Sadly I don’t think my favorite superhero Monkey has an arch-nemesis. In each episode he’s fighting somebody else. And three of those turned out to be not such a bad guy after all. 1) Ape villain returns to nature 2) Wrestler villain decides Earth is worth sparing and moves on 3) Lava guy just wants a little peace and quiet.
Mon-key
Mon-key
Mon-key
Major Glory vs. Comrade Red
Krunk vs. She-Thing (but they got it on)
I don’t think ValHallen has a nemesis unless it’s crowds of screaming women.
Agreement with Banner as number one arch enemy, but I’d list Gen. Thunderbolt Ross as a close second. The guy’s been hunting the Hulk from issue 1.
DC’s Captain Marvel vs. Black Adam. (Actually on review of the thread, I see someone mentioned Dr. Sivania, and he’s probably a better choice)
The Elementals vs. Saker
The Justice League vs. The Injustice League
ESPECIALLY after the latest story arc. DAAAAAMN
Daredevil vs. The Kingpen
Orion vs. Darkseid
Darkseid vs. Highfather
Mike Tyson vs. Common Sense
Bill Gates vs. The Guv’ment
I dunno, a powerful case could be made for Bullseye as the arch-nemesis of Daredevil. I suppose it depends upon whether you’re talking about “direct confrontation” or “generally making life hell”.
[ul]
[li]D.P. 7 :: The Overshadow (the comic book D.P. 7)[/li][li]Ant :: Aardvark (the old “The Ant and the Aardvark” cartoon used to air with “The Pink Panther”)[/li][li]Stedman :: Professor Hate (if you understand this one, you watch way too much TV Funhouse)[/li][li]James Bond :: Ernst Stavro Blofeld (I think Bond’s had more confrontations with Blofeld than anyone else. Plus, as I recall, Blofeld killed Bond’s wife.)[/li][li]Maxwell Smart :: KAOS[/li][li]Sarah Connor :: Terminator[/li][li]Dorothy Gale :: Wicked Witch of the West[/li][li]John McClaine :: members of the “Gruber” family (Die Hard movie series)[/li][li]kids living on Elm Street :: Freddy Kruger[/li][li]Sidney :: whoever was wearing the “Spooky Face” mask that week (Scream movies)[/li][li]Mr. Neutron :: FEAR (really just a front group for FEEBLE; Monty Python)[/li][li]John Chrichton :: Scorpius (Farscape)[/li][li]Basil Fawlty :: his stupid hotel guests (Fawlty Towers)[/li][li]Mrs. Broflovski :: Canada (South Park)[/li][/ul]
That oughtta do for now…
Transformers
Dinobots :: Constructicons
Omega Supreme :: Constructicons
Swoop :: Divebomb
Ultra Magnus :: Galvatron
Primus :: Unicron
Blaster :: Soundwave
Aerialbots :: Stunticons
Technobots :: Terrorcons
Fortress Maximus :: Scorponok
Metroplex :: Trypticon
Jinrai :: Overlord
Fire Convoy :: Gigatron
Star Saber :: Deathsaurus
Milestone Comics
The Blood Syndicate :: S.Y.S.T.E.M.
Inhumanoids
Magnocore :: Metlar
Living Redwoods :: D. Compose
Granites :: Tendril
Earth Corps :: Blackthorne Shore
assorted mix
Snake Eyes :: Storm Shadow
Wolverine :: Sabertooth
Jem and the Holograms :: The Misfits
Thor :: Loki
The Immortal Man :: Vandal Savage (DC Comics) The Immortal Man reincarnates and Vandal Savage is immortal. They were from rival Neanderthal tribes.
Johnny Blaze :: Zarathos (Ghost Rider)
Walkerton :: the Head Alien (It’s Walky!)
That’s enough for now.
Nope, it was definitely Mrs. Fawlty!
Stanley Tweedle: everybody in the Two Known Universes, apparently
Nah, Omega Supreme::Predaking, if you asks me. Besides, the Dinobots already had dibs on Devastator.
No, silly, Rodimus Prime::Galvatron. Ultra Magnus should be paired with Cyclonus, as they’re both seconds-in-command.
If you’re going to include the Japanese cartoons, don’t forget Multiforce::Dinoking and Road Caesar::Liokaiser. But that still leaves Victory Leo without a dance partner…
(Rob watches as the last two sentences whoosh past 99.98% of the SDMB populace)
Secret of Omega Supreme, dude. Omega Supreme had a serious mad-on for the Constructicons, and they hated him for chasing them all around the galaxy.
The best portrayals of both Ultra Magnus and Galvatron were in the commercial for the two toys. You know the one:
ULTRA MAGNUS: We meet at last, Galvatron.
GALVATRON: And it will be the last time we meet!
NARRATOR: Ultra Magnus is Galvatron’s sworn enemy!
That’s what I’m talking about 
For a good part of Transformers: Victory, Victory Leo’s his own arch-enemy, what with all the psychotic episodes.
Hey, there’s discussions on here that I can’t follow. 80s pop culture, though, that’s where I shine, especially Transformers. Besides, anyone who doesn’t understand will either pipe up and ask or just not pay attention 
Hercules > Hera
Austin Powers > Dr. Evil
Rocky and Bullwinkle > Boris and Natasha
Dexter > Mandark
Video Game Villains–bonus points for total obscurity!
Solid Snake : Big Boss
Guybrush Threepwood : Ghost Pirate LeChuck
Roger Wilco : Dr. Slash ‘Sludge’ Vohaul
“Sonny” Bonds : Death Angel
William ‘Blade’ Hunter : Bahumat
Dyne : Ghaleon
Ed Carnby : Hell
Gnort: The Scarlet Skier.
Best. Issue. Ever.
Comic Book Guy: mature, healthy relationships with women.
I used to think I was a geek because I collected undergound comics, reprints of EC comics, and paperback reprints of pulp magazine fiction.
After reading this thread, I realize I wasn’t a geek at all.
You guys–you guys are geeks!!! 
you guys have forgotten the one hero<->villain pair you’ve spent more hours with than any other:
Super Mario <-> Bowser
Given that the cartoons had three separate origins for the Constructicons (“Heavy Metal War,” “The Secret of Omega Supreme,” and the flashback where they built Megatron in “Five Faces of Darkness”), I’m suspicious that that particular origin is more valid than the rest.
That’s not the real Galvatron – he didn’t go “BWAHAHAHAHAHAHAHAHA!” even once!
True 'nuff.
I majored in Transformers, with a minor in G.I. Joe and Mighty Orbots, myself. Already got my order in for the Unicron bust, too…
Okay, that I’m used to.
Mighty Orbots Vs Umbra
Orbots Commander Vs An Empty Fridge
“Something is missing from this mixture, some vital ingredient. I know! Mustard!”
OK, I’ll bite: what the heck are “The Harrowers and Morte Mamme”? Cenobites and Leviathan are from the Hellraiser films, correct? Was this some comic book thing?