One of the most interesting characters in Attack On Titan is Zeke Yeager, the most well-known inheritor of the Beast Titan. He was originally introduced as an antagonist who fought alongside the Armored and Colossal Titans against the Survey Corps. As the manga progressed, readers learned a lot more about him.

RELATED: Attack On Titan: Eren Yeager's 10 Best Quotes

He turned out to be Eren's brother, had his own goals on how to save the Eldians, and betrayed Marley. As he is very intelligent and one of the most powerful titans, he has had a lot of important things to say.

10 "Dad, Mom, Please Don't Do Anything Dangerous Anymore. If They Find You, We're All Getting Sent To Heaven, You Know?"

Grisha Yeager's portrait with his family in Attack On Titan.

When Zeke was a child, his parents, Grisha and Dina, were the leaders of the Eldian Restorationists. They had him join Marley's Warrior Unit, hoping that he would be able to inherit a titan and save them.

However, when he heard the Marleyans talk about the group his parents led, he knew that it wouldn't take long for them to kill his parents. He begged them to stop what they were doing but refused.

9 "All Of Your Precious Sacrifices Will Bear Fruit. Eldia Will Be Free."

Zeke

When the people of Paradis learned that Zeke wanted to work with them, they were very skeptical. He killed many of their comrades but he could be a powerful ally himself. Eren decided to get to know his brother and went to Marley.

When he was ready, he had the Survey Corps save him and Zeke. The Beast Titan said these words when he met them again. Little did they know that his goal for freedom was very different than the one they had hoped for.

8 "He Looks Pretty Happy For Someone Who Pushed His First Family And Friends Into Hell And Left Them There."

Grisha looked wary and withered in Attack On Titan.

When Zeke decided to show his little brother their father's memories, he hoped that Eren would realize that Grisha brainwashed him. They got to see Eren when he was a baby, being raised by Grisha.

RELATED: Attack On Titan: 10 Best Quotes Of Petra

Upon seeing Grisha with his wife and second son, Zeke said these words. He didn't have any happy memories of his father and was shocked to find out that Grisha learned from his past mistakes. Eren became who he was always meant to be without being used by his father.

7 "We Were Both Victims Of Your Father."

Eren meets Zeke on the Cart Titan

When the Survey Corps fought against the Warriors at Shiganshina, Eren met Zeke for the first time. Thinking that Zeke was trying to take back the Colossal Titan, Eren threatened to kill Bertholdt. He was shocked to learn that Zeke knew Grisha.

However, before their conversation could continue, Levi chased after Zeke and the Cart Titan. It didn't take long for Eren to learn who Zeke really was as the answer was always in his basement.

6 "This Is Goodbye. We Never Did Learn To Trust One Another. But I Can't Blame You. The World I've Seen Was Just Too Different From What You've All Seen."

Levi and Zeke

When Zeke began working with the Eldians, Levi kept his eyes on him. The two had been through a lot and Levi wasn't willing to take any chances in putting trust into the Beast Titan. However, the soldiers around them let their guard down and started drinking. Little did they know that they were actually consuming Zeke's spinal fluid.

When the time was right, he screamed and turned the soldiers into titans. Levi was forced to kill all of his men, which Zeke was shocked over. The two nearly died by each other's hand but survived.

5 "Thank You, Mister Ksaver, For Playing Catch With Me. I'll Be Sure To Remember It Even If I Do Become A Titan."

Zeke and Tom

When he first joined the Warrior Unit, Zeke met Tom Ksaver, the Beast Titan before him. After Zeke found out that the Marleyans were close to discovering who the Eldian Restorationists were, he spoke to Tom about it.

Tom told him that in order to protect himself and his grandparents, Zeke would have to sacrifice Grisha and Dina. He saved his successor's life and became the father that Zeke needed.

4 "Since I Was A Child, My True Loyalty Has Been To My Father's Dream. I Am The True Eldian Restorationist."

Beast Titan looking down

After Kiyomi went to Paradis, she told Eren and Mikasa about her conversation with Zeke, which led her to go to the island. Zeke told Kiyomi that he is a member of the Fritz family and that he hid this away from everyone in Marley because he actually did believe in his parents' goal his entire life.

RELATED: Attack On Titan: 10 Best Quotes Of Marco

He used the Warrior Unit to try and make contact with the Founding Titan so that he could do what he always thought was best for the Eldians.

3 "I'll Free The People Of The World From Their Fear Of The Titans And I'll Free The Eldians From Their Suffering."

Levi vs Beast Titan | Marlowe death [Attack on Titan Season 3 Episode 17] - YouTube

As Tom's term was coming to an end, he told Zeke about what the Founding Titan is capable of. Not only can inheritors of the Founding Titan alter the Eldians' minds, but they can also change their bodies. Upon hearing this, Zeke decided that he would save the world by using the Founding Titan to make it so no Eldians would be able to have children.

If they were never born, they wouldn't suffer and the rest of the world wouldn't fear them. This became Zeke's goal once he inherited Tom's titan.

2 "So Long As There Are Eldians, This Hell Will Never End! If You Don't Do This Now, This Bloodshed Will Never Stop. What We've Repeated So Many Times Will Only Continue For Eternity."

Zeke

Before they went through their father's memories, Zeke hoped that Eren was really on his side. However, when the time came for them to change the world, Eren revealed that he would never betray the people he cared about and was using Zeke to control the Founding Titan.

Zeke begged his brother to not betray him and decided to take him through Grisha's memories in an attempt to prove that he was always right.

1 "It Isn't Your Fault That We Were Born To That Disgusting Monster Of A Man. We Are But Pitiful Victims. However, I Had Another Father. One Who Rescued Me. You Needed Someone To Rescue You As Well. I Swear I Will Not Abandon You. I Will Use The Power Of The Founder To Fix You."

AOT 30

As much as Zeke wanted the Eldians to become extinct, he wanted Eren to have the same goal. He refused to leave his little brother, who he had thought was manipulated to betray him, and hoped that he could help Eren see what he believed. However, this only helped Eren achieve his own goal as Zeke hesitated to use the Founding Titan.

The Rumbling began and Zeke learned that his brother really was his own person, unable to be persuaded by anyone to do anything that he didn't want to. Eren earned his freedom and Zeke became his prisoner.

NEXT: Attack on Titan: 10 Of Grisha's Best Quotes, Ranked