Who is the most powerful hero?

Who is the strongest hero? By strongest I don't just mean raw power. I mean, who is the overall champion who could take down any other hero? It dosent half to be Marvel it can be from eney comic.

MAJESTIC.

Hmm. I say KC Superman.

Thanos of Titan!!

By Hero do you mean anyone with super powers or only good guys? 

"By Hero do you mean anyone with super powers or only good guys? "

And i"m changing my choice to

The Prime Superman or Universal Majestic.

I will go with Ion Kyle Rayner.

If you mean only good guys I'll agree with mimic12 and say Ion but if you mean all super beings I would say Odin or Galactus.

Since it's raw strength, I would say Superboy-Prime.

Ok let me explane this again. By strongest I mean Strangth. I want to knoe who the strongest hero is? Who's go the most fighting power, dexterity, samina and so forth. I f they have the power to fly, manipulate energy or shapeshift then thats ok but like I said I am looking for the strongest form eney comic.

im currently worshipping my 1st comic idol ever the perfect man tactician magician fighter adventure anomaly cosmic only true rival thanos

"I will go with Ion Kyle Rayner.

"

Howard the duck

"http://www.comicvine.com/forums/battles/7/most-powerful-heroes-andor-villains-in-fictioncomic/2889/#48"