Talk:Regeneration Manipulation/@comment-24053170-20190815190845

All of the Titans and Titan shifters lack control of their regeneration.

The actual truth is that Ymir Fritz (the original titan) is solely responsible for all of the Titans regenerative abilities and their ability to shift between forms.

Without her, the titans are incapable of doing anything.

So really, nobody but her is capable of controlling regeneration in Attack on Titan.