It is revealed that Manfred Von Karma died in prison. But how? why?
Well, I have a theory. I have a suspect. Introducing Yanni Yogi. It makes sense logically. Manfred killed Gregory, of which Yogi was accused of murdering. The aftermath of DL-6 ruined Yogi's life, so he killed Robert Hammond for forcing him to plead insanity. So he got arrested and is now in prison. Now imagine that the true murderer has finally been apprehended. Yogi, having killed someone before, has the motive and experience needed to silence Manfred.