Yeah these are the good as well as bad guys who are just too much to handle. These guys can take on almost anyone, and the fun part is, all the ones mentioned in the list have fought one or the other sometime in the comics. Have a look at these strongest DC characters:
Darkseid is the worst of all the villains that the DC Universe has to offer but still he is one of the strongest DC Characters. Literally a God, Darkseid has always wanted to rule the earth. In one such arc, he infects the minds of all the Earthlings with an Anti-Life equation and possesses the bodies of various superheroes and alters the multiverse. Yeah, the guy who plans such stuff and can take on Superman sure is pretty strong.
Doomsday as the name suggests is Superman’s Doomsday. He was created in order to kill Superman, which he even did bring probably the biggest shock of all in the comics when the seemingly unbreakable Superman died.And well, someone who’s able to kill Superman sure has to be super strong.
J’onn J’ones is a really tragic character. Apparently the last surviving green martian who witnessed the death of not only his family but his entire kind. He is said to be the second most powerful member of the Justice League after Superman. He has Super strength, can fly, go intangible, can perform telekinesis, has regenerative abilities, has 9 senses, Martian vision, can manipulate mass etc. Sure is strong.
He is one of the New Gods of the DC Universe. Orion is someone who has even bean able to go toe to toe against Wonder Woman and Superman. Not just that he’s said to be as powerful as Darkseid and can even obliterate planets.
Of course he had to be on this list. Superman is well, super. Someone who is almost unbreakable and unkillable. Even when Darkseid ‘killed’ him, he was actually in a pretty deep sleep. Supes is someone who can not just lift planes and save kittens but even beat the likes of Darkseid and Doomsday in hand to hand combat.
Honourable Mentions: Wonder Woman, Shazam, White Martian, Black Adam, Captain Atom