1.If the nine titans came out of ymirs death, then how come only the supposed royal blooded descendent can control the other titans? I dont get it.
2.Are the other normal and abnormal titans, through their serums, are they created from the the nine titans or is it from something else?
3.Can the founding titan control all titans or just the normal/abnormal titans?
4.Why havent the eldians tried to pass annies female titan to one of their own? Is annies nape too hard to break through and inject serum?, I dont remember.