Is Doflamingo really dead in chapter 743? Kyros appears to have killed Doflamingo in chapter 743. Is he really dead? I want Doflamingo to die, but he can't just die so quickly. There should be a fight between Doflamingo and Luffy.
Doflamingo-sama is alive and well, as expected.

In chapter 744, we can see his head saying


  Fufufu... You guys really got me good. I'm head over heels in shock.




While in chapter 745, we can see that there are in fact two Doflamingos. The left one is the headless Doflamingo whose head Kyros severed, while the right one is (probably) the real Doflamingo.



Later in chapter 745, we can see Violet explaining what was going on.


  It appears to be a marionette made of string!




Basically, since Doflamingo ate the String Fruit, he has become a string human. He can manipulate strings to the extent that he can create a marionette duplicate of himself and move it around as if it were him. It was this marionette that Kyros had severed the head of, not Doflamingo's real head. Therefore, he is still very much alive and completely unharmed


   at that point at least.