Ymir in Attack on Titan actually refers to two different characters, and both have very tragic ends.

What happened to Ymir in AOT?

First: Which Ymir?

Fans usually mean one of two characters when they ask “what happened to Ymir in AOT?”

  • Ymir (Jaw Titan, Historia’s friend, 104th Training Corps).
  • Ymir Fritz (the very first Titan, slave of the Eldian king).

Below is what happens to both.

Ymir (Jaw Titan, Historia’s friend)

This is the Ymir who trained with the 104th and was close to Historia/Krista.

Her backstory in short

  • As a child, she was taken in by a cult that worshipped “Ymir” connected to the Founding Titan.
  • When the cult was exposed in Marley, the leaders blamed her, and she was punished.
  • She was turned into a mindless Pure Titan and exiled to roam near Paradis.
  • Years later, she ate Marcel Galliard, inheriting the Jaw Titan and regaining her human form.

Life inside the Walls

  • She joined the 104th Training Corps and became close to Krista Lenz (Historia).
  • She secretly carried the Jaw Titan power and finally revealed it to save her comrades during the tower battle, nearly dying in the process.

This is the moment she transforms to protect Historia and the others at Utgard Castle.

Going to Marley and her off‑screen death

  • Reiner and Bertholdt kidnapped her and tried to take both Ymir and Eren back to Marley.
  • Ymir decided to go with them to Marley in order to secure a future for Historia, even if it meant sacrificing herself.
  • Later, a new Jaw Titan appears in Season 4 with a different look, implying Ymir was killed and eaten to pass on the power.
  • In her farewell letter to Historia, she writes that she is going to die soon and that “only punishment” awaits her in Marley, confirming she accepted her fate.

So, Ymir (Historia’s Ymir) dies off‑screen in Marley, eaten by a successor to the Jaw Titan—commonly understood to be Porco Galliard.

Ymir Fritz (the first Titan)

This is the ancient girl who became the first Titan and served King Fritz.

Her life and “death”

  • She was a slave of the Eldian king and gained the power of Titans, which he used to conquer and destroy his enemies.
  • Thirteen years after obtaining Titan power, she “died” in the physical world, but her consciousness lived on in the Paths, endlessly building Titans from sand‑like matter.

How her story ends

  • For 2,000 years she remained bound by her twisted love and obedience to King Fritz and his bloodline.
  • At the end of the story, Mikasa kills Eren, the person she loves most, to stop the Rumbling and save the world.
  • Witnessing Mikasa choose freedom and kill someone she loves breaks Ymir Fritz’s own chain of unhealthy devotion to Fritz.
  • After this, Ymir releases the Power of the Titans from the world , ending the Titan curse and finally freeing herself.

So, Ymir Fritz doesn’t “die” in a normal sense; she is spiritually released when she sees Mikasa’s choice and then removes Titan power forever.

Quick comparison

[3] [1][7][3] [5] [5] [9][5]
Character Who she is What happened to her Final state
Ymir (Jaw Titan) 104th trainee, Historia’s close friend, Jaw Titan shifter.Goes to Marley with Reiner and Bertholdt, ultimately killed and eaten so the Jaw Titan can be inherited.Dead; her Titan power passes on to a new Jaw Titan.
Ymir Fritz First Titan, slave of King Fritz, source of all Titans.Dies physically after 13 years but remains in the Paths, creating Titans for centuries under Fritz’s will.Freed when she sees Mikasa kill Eren and then removes Titan powers from the world.

Mini “story” recap (spoiler‑aware)

If you just wanted the Quick Scoop on what happened to Ymir in AOT:

  1. Historia’s Ymir
    • Lived a life of guilt, then chose to live for herself and for Historia.
 * Voluntarily returned to Marley, knowing she would die, to give Historia a chance at a better future.

 * Was ultimately eaten so someone else could inherit the Jaw Titan.
  1. Ymir Fritz
    • Became the origin of all Titans and was trapped in a cycle of obedience and abuse for 2,000 years.
 * Finally let go when Mikasa chose to kill Eren out of love and responsibility, and then erased Titans from existence.

Both Ymirs are written as tragic figures whose stories revolve around love, sacrifice, and the struggle for freedom , which is why they’re still a huge talking point in forum discussions and “what happened to Ymir in AOT” breakdowns even years after the finale.

TL;DR:

  • Ymir (Jaw Titan) dies off‑screen in Marley, eaten by a successor (Porco) to pass on the Jaw Titan.
  • Ymir Fritz, the first Titan, is spiritually freed at the end when she sees Mikasa kill Eren and then removes Titan powers from the world.

Information gathered from public forums or data available on the internet and portrayed here.