Top 3 toughest villains per Hero

Which hero has THE toughest, most powerful, deadliest, smartest, most bad arse villains?
I figured 3 as a cap, to keep things simple.

Any hero, mid herald and below. Define your top 3 any way YOU see fit.
You can do teams, if you want.

Wonder Woman's toughest: Queen of Fables, Ares, Genocide

(Not counting one-time opponents like the Shattered God or Chronus)

Do you want to cap the baddies aswell or you will get some wonky responses.

Like Adam Warlock

Thanos, Magus, High Evolutionary

Green Arrow (pre DCnU):
Onomatopoeia
Constantine Drakon
Deathstroke

Too bad mid Herald is the cap, because I was recently going through all of Thor's enemies, and he probably has close to the most dangerous, or powerful foes of any high Herald.

No cap on the bad guys, Pym. Wonk away!
And Stoic, i thought about going higher but didnt want yet another Thor/Superman wank/bash fest. Call me a pessimist but i could see it happening.

Good picks so far though. Good to see a street leveler in there. These usually have pretty interesting villains.

The Flash:

Grodd
Zoom (Thawne)
Zoom (Zolomon)

Constantine:
Nergal
First of the Fallen
Constantine

Edit.

Thor
Mangog, thanos, celestials at times

Thor is high herald, Leon. Not what we're going for.

Razzin frazzin silly Leon doesnt read the dang Op or ignores it like a razzin frazzin polecat mutter grumble... 😉

Originally posted by DarkSaint85
Constantine:
Nergal
First of the Fallen
Constantine

I'v e never read constantine, are you saying that there is another Constantine, or that he is one of his own worst enemies?

I assumed the latter. Havent read him in a long time.

But please, TELL us!

Originally posted by riv6672
Thor is high herald, Leon. Not what we're going for.

Razzin frazzin silly Leon doesnt read the dang Op or ignores it like a razzin frazzin polecat mutter grumble... 😉

I dismissed it because you're a ******.

Then I pick BRB, CM or The Flash.

Originally posted by Wei Phoenix
I'v e never read constantine, are you saying that there is another Constantine, or that he is one of his own worst enemies?

Both, lol.

Constantine had a twin who was 'perfect', who died in the womb. He was meant to be the greatest magician who ever lived. His spirit lived on, however, and all of John's worst experiences (his cancer etc) were because of his doing, so that John's soul could be joined to his.

Also, John is his own worst enemy sometimes.

Johns probably got the most powerful enemies in comparison to his own power.

Originally posted by DarkSaint85
Both, lol.

Constantine had a twin who was 'perfect', who died in the womb. He was meant to be the greatest magician who ever lived. His spirit lived on, however, and all of John's worst experiences (his cancer etc) were because of his doing, so that John's soul could be joined to his.

Also, John is his own worst enemy sometimes.

Thats cool!

Originally posted by LeonBuco666
I dismissed it because you're a ******.

Ill asterisk your ass haha

So, no actual picks then?

Asterisk.

Constantine & The Flash are my picks.

You're alright, man.