

Late in the manga, we know that titans are actually transformed humans, and
that not all people who transform into titans can turn back into human form.

I did a lot of research on Ymir and there are many theories regarding how she
turns back to her human form for the first time. How does it work?


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attack-on-titan
How does Ymir turn back into her human form?


Just the same as Eric the titan body falls dead at her comand and she foracess
her way out through the back of the neck. It gross but awesome.


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# The answer contains heavy spoilers to anime watchers. You have been warned!

It's been heavily hinted (almost confirmed, really) that titans are created by
transforming humans in some way. Ymir was transformed to a mindless titan over
60 years ago, and was unable to return to her human form for a very long time.

We already know that several powers (such as titan shifter powers, titan
control powers, and "The Memories") can be transferred by eating. This
conclusion was reached by Hanji in chapter 57.

When Ymir ate Reiner's and Berthold's friend (who was also a titan shifter),
she gained his titan shifting abilities, and was able to return to human form.


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I wanted to update this question because the answers are outdated, and all of
this information has been revealed in Chapter 89.

Please note, spoilers ahead, read at your own risk.

In Chapter 89, pages 8-18, we see a summary of Ymir's life in chronological
order.

> Ymir was originally an Eldian begger in the Marleyan internment zone for
> Eldians. As a child, she was caught associating herself with Ymir Fritz
> cultists, and she took the punishment for the cultists. As a result, she was
> sentenced to life as a mindless titan, taken to the penal colony Island
> Paradis, injected with titan serum in her spinal fluid, and shoved off the
> wall into the territory. This results in her roaming the titan territory of
> the penal colony for 60 years as a mindless titan. [![enter image
> description
> here](https://i.stack.imgur.com/NwQvA.jpg)](https://i.stack.imgur.com/NwQvA.jpg)

At some point Ymir

> hibernates in the earth under dirt and brush until 845 when Reiner, Marcel,
> Bertholdt, and Annie accidentally stumble upon her in hibernation. Marcel,
> seeking to save Reiner, sacrifices himself when Ymir tries to eat Reiner.
> Since Marcel was a titan-shifter he passed on his powers to Ymir, and Ymir
> regained the ability to shift back to human form. So, in essence, Ymir was
> only able to return to her human form because she ate a titan-shifter and
> then became one. All of this was entirely by accident and never meant to
> occur. [![enter image description
> here](https://i.stack.imgur.com/9isps.jpg)](https://i.stack.imgur.com/9isps.jpg)


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So how did Ymir turn to a titan

Major spoilers

> So she was in Marley,Marley is a place beyond the walls. Eldians found her
> and called her Ymir after Ymir Fritz. She was worshipped. She was caught by
> Marleyians and was sent to Utopia. Utopia is a place that turns people into
> mindless pure titans by injecting titan serum. She roamed the earth for over
> 60 years. She was hibernating under the ground. Reiner and Bertholdt’s
> friend saved Reiner from being eaten and got eaten instead. **So she turned
> to a Human for eating a Titan shifter and got his powers.** So That is It.


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