Top 6 most dangerous villains in solo leveling season 2-3

1).kandiaru

 The Architect is the creator of The System, the tool that Jinwoo uses to get stronger. The System was created by The Architect for Ashborn's reincarnation. He wanted Ashborn to return to the Earth, and he realized that he would need a strong enough human to house the Shadow Monarch's body. Kandiaru, the Architect, is a powerful mage who has lived for a very long time. He controls the God Statues expertly, showing off his power in the first few episodes of the series.he is also a one of the most dangerous villains

He's able to take away Jinwoo's Shadows during their fight, showing just how powerful and manipulative he is. The God Statues he controls are also strong enough to obliterate most B-Rank Hunters without a second thought, and give A-Rank Hunters an incredibly hard time. Kandiaru's mystique and magical prowess are two reasons why he ranks so highly as one of the strongest villains in Solo Leveling

2).Beru ( The ant king )

The most dangerous villains in season 2

The Ant King might be the most terrifying villain in Solo Leveling for one simple reason — he's death incarnate. He moves faster than the strongest S-Rank Hunters can even process, and he is strong enough to make the strongest Hunter in all of Japan look like a joke. He decimates Goto Ryuji before he can even process what happened. If it wasn't for Jinwoo using Shadow Exchange at the last second, the Ant King would have obliterated Korea's smtrongest Hunters too.

The Ant King is one of the strongest villains in the series from the second he enters it, and he grows even stronger as Jinwoo's Shadow. His fight with Jinwoo might be the best fight in all of Solo Leveling for a few reasons, and one of them is certainly how horrifyingly strong the Ant King truly is.

3). The Giants 

The Giants in Solo Leveling are the first sign that humanity is in deep trouble. Up until this point in the series, humanity has been able to handle everything that comes from the Gates with relative ease. Other than Kamish, a villain before Jinwoo's time, and the Ant King, there haven't been too many world-shattering threats to Jinwoo and his fellow Hunters. The Giants were the heralds that humanity's peace was coming to an end.

Legia, the Monarch of the Beginning, is the King of the Giants. He's one of the first Monarchs Jinwoo meets in the series, and his Giants are every bit as terrifying as he is. The Giants are so strong that Yuri Orloff, the strongest barrier magic user in the series, is no match for them. When they descend upon Tokyo, they take millions of Japanese people with them in no time at all.

4). The Titans

The Titans are one of the last villains in Solo Leveling. After Jinwoo asks the Rulers to use the Cup of Reincarnation, he rewinds time by 10 years and creates a new timeline. In the previous timeline, the Titans went to the Ruler's and Monarch's home world, looking for powerful creatures to consume. Since Jinwoo killed all the Monarchs in his new timeline, they head to Earth instead.

Jinwoo and his Shadow Army make quick work of the Titans, but that doesn't mean that they were weak. The Rulers made sure Jinwoo knew that the Titans were strong enough to fight the Rulers on even footing, and the Rulers were barely strong enough to fend off the Monarchs. Unfortunately for the Titans, by the time they made their way to Jinwoo, he was so absurdly strong that they never had a chance.

5).The Monarch 

It is pretty hard to tell which of the Monarchs is the strongest, bar the Shadow Monarch and the Monarch of Destruction. Regardless of which Monarch is the strongest, each of them is significantly stronger than any other villain in the series. There are seven Monarchs in Solo Leveling, bar Jinwoo, Ashborn, and Antares. They each represent a different aspect, from the Plague to Ice, and each packs a serious punch every time they're on-screen.

The Monarchs are significantly stronger than even Nation-Level Hunters like Thomas Andre and S-Rank Hunters like Lennart Niermann. The Monarch of Frost, Sillad, is even strong enough to assassinate Go Gunhee without much effort. The Monarchs are pure evil. They're only around to destroy the Earth and claim its latent magical ability for themselves. If Jinwoo hadn't ascended to become the Second Shadow Monarch, there would have been nobody around to stop them.

6).The Antares ( The final boss )

Antares is the final villain of Solo Leveling and the strongest by quite a margin. He's the Monarch of Destruction and the King of Dragons. He has some of the strongest abilities in the series, including Dragon's Fear — the ability to make everyone who is weaker than him tremble in fear. He's also one of the few characters in the series that can kill Jinwoo's Shadows for good, stopping Jinwoo's strongest ability in its tracks.

Jinwoo fought Antares with nearly all of his Shadow Army and still almost lost. Jinwoo was smart enough to realize that Antares was a villain on another level. He set Antares up so that their fight would bend space and time itself, allowing the Rulers to fully manifest in their realm. The Rulers were the group to finally kill Antares, proving that even Jinwoo, with all of his levels he'd acquired, was no match for the Monarch of Destruction.