The MCU is home to many powerful villains, with the likes of Thanos, Ego, Loki, and Wenwu, just to name a few. However, none of them compare to the Avengers next big bad, Kang The Conqueror. Kang made his debut in Phase 4, as "he who remains" in the Loki finale, one of the many variants of Kang. But his appearance in the highly anticipated Ant-Man and The Wasp: Quantummania will see Kang in his first official, and most likely extremely powerful appearance as the new main antagonist of the MCU. Played by Jonathon Majors, it is very likely we will see him appear in most MCU projects going forward, and with the characters' many variations, it will be interesting and exciting to see Majors in a variety of uniquely different variants.
Kang the Conqueror is an extremely powerful entity, who sets out for total multiversal domination, and his abilities, powers, intellect, and arsenal will allow him to do so with incredible ease. Thanos (the MCU's most powerful villain to date) wanted to rid 50 percent of the universe's population, and he succeeded. Kang, however, wants to conquer and pretty much destroy all the known and unknown universes, and if No Way Home, Multiverse of Madness or the Disney+ original series What If...? taught us anything, it's that there are countless other universes, so yeah, Kang is pretty powerful. Here is why Kang will be the most powerful MCU villain.
Multiversal Travel
As we have previously mentioned, Kang the Conqueror can travel between multiverses with relative ease, and whenever he so desires. With this, Kang can communicate with his other variants, as well as being able to form an army of them to battle the Avengers. Similarly, if the battle against the Avengers proves too difficult, he can escape or trap the other Avengers in a different universe, dwindling their numbers and being able to overcome them with ease.
Time Travel
On top of being able to travel to and from every universe, Kang can also time travel, going to any time in the past, as well as any time in the future. With this, Kang has a pretty good knowledge of the past and future, knowing his fate and being able to change it. Having the ability to time travel is just as dangerous as hopping to and from different universes. Being able to discover his fate and how the future and his plans will ultimately unfold, proves even more of a dangerous threat to the Avengers. It's highly likely that he knew Thanos would collect the infinity stones and snap his fingers, and Kang just sat there with a bucket of popcorn and just watched.
Infinite Variants
Kang has an infinite number of variants, with each variant possessing different abilities, and while the odd few are good, the majority are pure evil, seeking any and every way to take over the universe. We have already seen one variant in the MCU; "he who remains", who for the most part wasn't necessarily that evil, at least compared to his other variants. Now, in Quantummania, we have his main MCU appearance, who is already terrifying, and from the trailer is very powerful. In the comics, Kang has had variants, with a handful being Iron Lad, Rama-Tut, Scarlet Centurion, and Immortus; there is a likely chance that the MCU will dive into these variants, which is incredibly exciting, but if Kang attempts to build an army then the Avengers are doomed, lets hope they have at least one Kang on their side.
Kang's Multiverse Destroying Arsenal
If Kang having infinite variants, having the ability to travel through different universes, and time travel wasn't enough, then behold his multiverse destroying arsenal. Kang is already incredibly powerful, with his vast intellect, super strength, incredible endurance, and weapon summoning. There is already enough to allow him to go toe-to-toe against even the most powerful Avengers. However, Kang yet again has something up his sleeve, that being the Ultra Diode Gun, the Cosmic Cube, and the Forever Crystal.
The Ultra Diode Gun was predominantly wielded by Rama-Tut, one of Kang's variants. However, this doesn't stop Kang from killing this variant and stealing his weapon. This weapon has the ability to drain from its targets, any and every superpower they may have, as well as draining them of their free will, making them an instant slave to Kang.
The Cosmic Cube has the ability to control matter and energy, being able to grant its user whatever they so desire, and if Kang gets a hold of it, we can expect him to alter time and the multiverse on an unimaginable scale. Although this device requires some practice, and only the most skillful are able to wield it properly, there is no doubt Kang already knows how to use it long before he gets his hands on this incredibly powerful item.
The Forever Crystal is the most likely weapon fans can expect Kang to use in the MCU, and it could possibly be what Kang is searching for in Quantummania. The crystal contains all the temporal power in Kang’s kingdom, Chronopolis, and harnesses this power into a single and multiversally-dangerous weapon. Meaning the weapon can alter reality and time on a cosmic scale, allowing Kang to create a new timeline entirely, which is safe to say proves very deadly for the Avengers.