Board Thread:Manga/@comment-5774380-20160908231942/@comment-27321453-20160914182006

He was already a Titan Shifter when he fought Frieda, he only ate her to get the Coordinate and not her shifting ability. Grisha was a Titan Shifter ever since Keith found him outside the Walls. We don't know how he acquired it or who he ate just like we don't know who ZRBAM ate to get their shifting ability. Bertolt claimed it was the same for him and Reiner (they don't remember eating anybody) when Ymir said she doesn't remember who she ate.