

In his earlier transformation form, Koro-sensei had a humanoid and white-
colored body.

![enter image description here](https://i.stack.imgur.com/GLs33.png)

But later on, his body had undergone a drastic change and his body became like
an octopus with a large smiley face.

![enter image description here](https://i.stack.imgur.com/Oy096.png)

Why did his body transform? And could he revert back to his humanoid-tentacle
like body?


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2017-11-25T08:14:14.050
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2019-05-05T03:20:16.657
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question
assassination-classroom
How did Koro-sensei's body change from humanoid to an octopus-like creature?


While in the laboratory, as the experiments were performed his body slowly
became almost completely made of tentacle cells. If you look at other tentacle
wielding humans like Itona and Kayano, their limbs don't become tentacles
normally. This shows that even while still maintaining a mostly human
appearance, most of his body was already tentacles just before his escape
(Chapter 138)

When he made his escape, his body lost most of his human characteristics and
took on the appearance of being full tentacles (still 138), explaining that
the tentacles are influenced by the host's emotions. He underwent a grotesque
transformation because he felt that he was giving up his humanity and becoming
a monster.

Finally, his transformation to yellow occurred after he escaped in 140,
underground. This lovable yellow form was because of his emotional change. He
desired to be lovable, and he was happy (as demonstrated by the smile and the
yellow coloration). He saw himself not as a master assassin human or a killing
machine, but as a happy lovable teacher, so the tentacles shifted to
accomodate these thoughts,

So, based on what we know about the tentacles, Korosensei's body has the
capability to revert to his human appearing form. The tentacles have been
shown to simulate a human body before, and they can take any form. However,
this transformation is based on an emotional state. That means the user must
feel or believe that they are the human they take the appearance of.
Korosensei cannot do this because he no longer sees himself as the man that
was the world's greatest assassin.


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2017-11-25T23:39:19.193
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2017-11-27T07:58:10.847
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answer