Board Thread:Theories/@comment-17499145-20170509021147/@comment-31975739-20170510223959

I'm actually only caught up with the anime, haven't read the manga but did read the wiki, so my theory maybe completely garbagio...

I predict that the ruler of Marley has to be in control of the 9th Titan, whatever it may be. I think of it like this: why would the ruler of Marley opt out of becoming a titan shifter his/herself when presented the opportunity? Perhaps its an incredibly tanky and huge titan, like the quadrupedal colossal titan, or perhaps he's an agile warrior, and similar to Zeke's Beast form or Eren K/J's Assaulter form. And maybe he/she even trained for it - think like Fuhrer Bradley before he became Wrath in FMA:B.

Or an even wilder theory - perhaps, given the technology of Marley, the ruler has a tanky titan form with a secondary "exoskeleton" made just for him/her - a sort of dieselpunk-meets-Pacific-Rim style Mecha.

But then again, you guys know the manga and I don't, so I'm probably wrong.