Like Dent, he wants to take the Machiavellian measures to do what's right, even if it's at the expense of his own humanity. Ultimately, however, both their actions lead to tragedy and Eren inevitably becomes the villain of his own series.
It was because of his future-seeing abilities that most of the story transpired the way it did, which makes Eren seem even eviler than how he was initially presented. Eren wasn't always an evil character, but there are plenty of hints sprinkled throughout the series regarding what he was destined to become.
While some think Eren is a hero, Many fans consider Eren to be a victim of the series of events that occurred in Marley and Paradis but Eren truly is a good guy who turned bad to protect his people. This is a bit complex to explain, but if you ask what Eren is doing is right then the answer is “No.”
Zeke Yeager, otherwise known as the Beast Titan or just The Beast, is the main antagonist of the Attack on Titan series.
It's because he saw that the entire world hated him and his kind that the only solution he could arrive at was to kill the entire world. This is pretty much what convinced him that the entire world was his enemy.
Eren hates Mikasa's supposed lack of free will and claims he always hated her for having no freedom. Eren points to Mikasa's headaches as proof her Ackerman bloodline is all that's keeping them together.
Thus, his ultimate goal is to harvest the power of the Founding Titan to sterilize all Subjects of Ymir. By rendering them infertile, there will be no further generations of Eldians, and by correlation, the ability to transform into Titan dies with them.
After starting the Rumbling, Eren and his army of Titans exterminated 80% of the world's entire population. With this in mind, it seems fair to say that Eren is easily the most evil character in the entire AttackonTitan series.
King Fritz
King Ymir also showed little humanity that he was more annoyed that he lost Ymir as a weapon than as the mother of his children. If there's one character in Attack on Titan that deserves all the hate of the fanbase, it's King Fritz.
After joining and fully committing to the Yeagerists, Eren severed all ties with his friends and the military, now viewing them as the enemy.
When it comes to pure skill, Levi far outranks Eren. Not only does Levi have more experience in the field, but he's also just a better fighter overall. Without his ability to transform into a Titan on command, Eren wouldn't stand a chance against Levi.
Due to the time jump and how much more he learned about the world, Eren's personality greatly changed. This new side of Eren was nothing like what fans would have expected him to become.
Levi is admired and considered a hero by the people inside the walls for being the strongest soldier of humanity. When confronting his enemies, he can be extremely brutal and merciless towards them.
The Survey Corps lost trust in Eren simply because Eren set up the Raid on Liberio knowing he was the island's biggest asset – and forced the Scouts to support his act of war by manipulating their longstanding mutually beneficial relationship in order to preserve his life.
Eren was devastated by Sasha's passing. However, because of what he experienced and what he had to do to save the Eldians, hearing Sasha's final words made sense to him and brought back memories of when they were younger, and it was easier to hate the Titans for the devastation they had caused.
Why didn't Zeke tried to eat Eren and take the founding titan as he already have royal blood? Why didn't he took founding titan from Eren? He already has royal blood. From this he can use the power of Founding titan to it's full extent and achieve his goal.
Pieck's Cart Titan is arguably the weakest of the Nine, but it comes with several advantages. Unlike its eight brethren, the Cart Titan walks on all four legs, making it an excellent method of transport. Pieck often has large structures attached to her back, which carry both people and weapons.
While initially a problem, as Zeke has been Eren's enemy for the whole story so far, Eren eventually learns of Zeke's mass euthenasia plan through his co-conspirator Yelena, and realizes he can pretend to be aligned with Zeke to ultimately use Zeke's royal lineage for his own goals.
Eren's Ultimate Fate in Attack on Titan
After making it inside Eren's Titan mouth thanks to assistance from Levi, Mikasa decapitated Eren's human body and kissed him goodbye for the first and last time. The final chapter confirms Eren's death -- for good this time.
Eren is shown to believe in freedom and have some sort of obsession with it. One of his biggest dreams is to be free and to free humanity.
Eren's goal was to make Armin and the alliance into heroes who save humanity from extinction by stopping him. His intention to die at the hands of his friends was an elaborate plot set up to guarantee their freedom. He sacrificed everything for those he cared about. All this wouldn't have been possible if he was alive.
Eren and the Titans
In the end of the manga, Eren attempts to destroy the world by reviving Ymir and invoking the power of the Founding Titan. However, Mikasa ultimately kills him, which results in Titans and their powers vanishing from the world.