Board Thread:Manga/@comment-5774380-20150709193253/@comment-24930713-20150712015920

Grisha is not the Beast Titan! I'm not sure why people still have doubts about this. We've had several chapters before all of this showing Grisha's Titan form. As well as proof stated by Rod Reiss, a member of the true royal family that was there when his brother and daughter became the Coordinate, about how to gain the abilities of the previous Titan shifter. We even have an image of how much of Grisha's body was eaten. Paired with what Rod said, it should be clear that he's dead. If Grisha was the Beast Titan, he would have to wait for them to come to him. He could just go to Eren and they could either leave together or he could eat Eren.

Personally, I believe that Grisha is from the same place as Reiner, Bertolt, Annie, and Marcel. I sort of feel like he was lying about not remembering anything. And I just get this nagging feeling that he was on the same side as RBAM, but had his own separate orders. I think he attempted and succeeded in infiltrating the walls, but when he didn't return  after so many years to the "Homeland" they sent RBM to finish the mission. And depending on how you looks at it, it's just dumb luck that both Grisha and Bertolt/Reiner's attacks were on the same day. Which would, in my opinion, explain why Grisha was so freaked out when he heard about Wall Maria falling. He was probably desperately hoping his family was okay.

Now I'm even more anxious about the next chapter!