Board Thread:Theories/@comment-75.176.164.75-20160318202428/@comment-24407809-20160319042552

EternalLocket wrote: I think the major flaw in this theory is that Grisha and Zeke would have to be over 100 years old. Since that's how long Titans existed. Which, technically, is not a problem for the Grisha part of your theory as evidenced by Ymir. But then that leaves Zeke who, it's hard to tell without a color image, doesn't look too much older than Grisha if they're relatives. And we currently have no evidence to prove being a Titan Shifter slows down the aging process.

Other than that, I do feel like Grisha was on his side for a while. So I feel that pretty much everything past this: "he rebelled" seems completely plausible.

Also, I think you could have edited your original post. :p While I'm not 100% sold on this theory myself, I've always assumed that characters stop aging when in Titan form (like Ymir) regardless of whether they are Shifters or mindless, and begin aging again when in human form (like Uri Reiss).