To name the strongest villains in all of Marvel, there are: the Original Transcendent, the Cosmic Heart Exterminator, then the Disciples, the Molecule Man, and HOM Wanda.
The following is an updated version of the rankings, reference to the Zhihu, netizens organized by the various types of rankings, and then after a variety of postings, group discussions, and ultimately sorted out the Marvel full character ranking (unique secret code, carefully organized). UNIVERSE monolithic cosmic part of the character details can be found in the other Baidu wikipedia answer to the corresponding part of the content:
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NO.1: AAO (Above All Others, the original O-A-A)
The Supreme Beyond All Others , also known as OAA (One Above All). is the transcendent absolute supreme being (vs. non-being?).
Omniverse
NO.2: Adam, the Court of New Life
Omniscient, omnipotent, "God-like" being, ordained by the AAO (OAA).
NO.3: The Power of the Phoenix
An all-powerful cosmic being, the power of the White Phoenix King is only an infinite fraction of its power.
NO.3 (tie): Power of Chaos
The power used by Homwander to reboot the Omniverse and resurrect MJJ.
NO.4: Other Omniverse-level characters
Jamie Braddock, Mad Jim Jaspers, Nexus Havok, Vangaard, Merlin, Roma, Meggan, Captain Britain + Sword in the Stone.
MEGAVERSE MEGAVERSE Mega Universe Class
No.5: Nemesis
The true source and essence of the Infinity Stones, the aftermath of their deaths created two multiverses. It can modify, realize, create, distort, or reorder any space-time, cause and effect, imagination, reality, dreams, scientific laws, natural laws, etc. at will.
NO.5 (tie): BrothersBrothersT/B
Symbolizing the entire two mega-universes of Marvel and DC, he was the supreme being in Marvel and DC's collaborative comics, yet was ultimately crushed to death by the Court with one hand.
NO.5 (tie): Interdimensional Infinity
All-around about as powerful as Nemesis. Holds Eternity, one of the five creator gods, in one hand.
MULTIVERSE MULTIVERSE LEVEL
NO.6: Serratok, Edifice Rex the Cleaner, Master of the Matrix
NO.7: Exterminator
Gathered all six Infinity Stones, the top existence of the multiverse, can kill the five major gods of creation, and was ultimately limited in power by the old version of the "Court of Life". "
No. 7: The Exterminator
NO.8: Chin Grey
White Phoenix King, multiverse-level phoenix power, has direct control over all other single-universe-level phoenix hosts
NO.9: Marquis of Death
Can travel between parallel universes, can effortlessly destroy reality, and can create out of thin air and manipulate and control all gods and creatures within the multiverse, including the Exterminator and the Creation Gods
NO.10: The Five Creation Gods (Saturated Star Swallow, Eternity, Infinity, Death, and Annihilation), and Derivation Gods (Talisman, Granta, King of Chaos, Lord of Order, Hunger, Decay, Slorioth, and Negative Entropy)
UNIVERSE Mono-Cosmic Class
Detailed descriptions of the characters in this section can be found in the corresponding sections of my answers in other Baidu encyclopedias:
/question/1796470653091708987
/question/1306598199807109619
No. 11: Cosmic Class Characters
Franklin Richards, The Three Emperors (Vulcan Vulcan, Black Batman, Sentinel Void), Star Swallowers (Silver Shadow Man, Stardust, Tyrant, Emperor Flame), Organization Annihilator (Silver Shadow Man, Horseface Thor, Gladiator, Nova, Quasar, Ronan the Accuser), Star Masters (Silver Shadow Man, Horseface Thor, Quasar, Zenith), Superman (Hebron, Dolemite Swordsman, Mr. Blue Marvel, Thor), The Summers Family (Scott Summers, Madeline Pryor, Electro-Sorcery, Hope Summers, Vulcan Summers), The Great Swarm (Legion), Magneto, Hulk, Hulkbuster Hulk, Red Hulkbusters, Matthew Malloy, Dr. Strange ( Doctor Strange), Maniac Attack (Onslaught), Apocalypse (Apocalypse), Ronan (Ronan), Ultron (Ultron), GhostRider (GhostRider), Professor X.
NO.12: GROUND LEVEL CHARACTERS
(1) Fantastic Four: Mr. Fantastic (DC Rubberman), Invisible Woman, Thunderbolt, Stoneman
(2) Avengers: Thor (see above), Hulk Hulk (see above), Iron Man, Spider-Man, Captain America (DC Batman), Winter Soldier, Black Panther, Black Widow, Hawkeye (DC Green Arrow), Falcon, War Machine, Ant-Man (DC Atomic Man), Yellowjacket, Nemo (DC Aquaman), Moon Knight (DC Batman), Nova, Barbara the Mimic Bird, Jack of Hearts, Ares the Greek God of War, Vision (DC Red Whirlwind), Swordsman ......
(3) Inhumans: Black Bat King (see above ), Medusa, Crystal, Trettan, Karnak, Goreworker ......
(4) X-Men: Magneto (see above), Professor X (see above), Laser-Eye, Wolverine, Sabretooth, Rogue, Stormwoman (DC Wonder Woman), Iceman, Wraith, The White Queen, Sonic Boom, Quicksilver (DC Flash), Steel Force, Secret Agent, Angel, Nightcrawler, Phantom Cat, Spirit Saucer, Beast, Chien-Hsun Lee, Hulk (Laser-Eye's brother), King of Cards, Shapeshifter, Polaris, X-23, The Mimic (DC Swamp Thing)......
(5) Defenders of the League: Nightcrawler (Daredevil), Iron Fist, Jessica Jones, Luke Wonder Man -Cage ......
(6) Howling Commandos: Blade Runner, various vampires, Frankenstein's Monster, mummies, etc.......
(7) Thunderbolts: General Ross (Red Hulk) (see above), Evil Dead (see above), the Punisher, Erika the Phantom Slayer (DC Catwoman), Deadpool (DC Deathstroke), Agent Venom ......
(8) Gang of Vipers: Viper (Viper), Diamondback (Diamondback), Giant Pit Viper (Bushmaster), Anaconda, and more! ......
(9) Other Characters: the Red Skull, Crossbones (Agent Hydra), Target Eyes (DC Deadshot), the Master of Mimicry, the Humanoid (DC Swamp Thing), Dr. Octopus, Professor Lizard (DC Crocodile Man), and the Green Monster ......