Board Thread:Questions and Answers/@comment-39665740-20190601185125/@comment-39665740-20190608223718

Aggression25 wrote: One possibility is that any that possess all Nine Titans gains the ability to combine their powers in a variety of ways, even creating a Titan form that harmonizes the individual powers.

Another possibility is that all Nine Titans put together in one person brings back a reasonable facsimile of Ymir Fritz. The latter was one of my original theories. The former would be very interesting in its own right, however. I have a strong suspicion that the joining of the nine Titans is inevitable if one were to follow the story far enough. That's not to say that we as readers (or viewers) will ever see it come to pass, as the series may very well end before this happens. The only way to stop this from happening, is for someone (anyone, really) to use the Coordinate's power to wipe out the Titans and exterminate every last Subject of Ymir, including themselves. Or, i suppose the Devil of All Earth could show up and take its power back, and drag the Eldians all to hell. Xp