Kingdom Hearts 3 is heavily linked to getting released this year and there is still no word from Square Enix over which characters will be coming in the game.
Even so, the game developer has already shared that they desire to add in Elsa from the Disney hit film Frozen, Darth Vader from Star Wars and Iron Man from Marvel Heroes in Kingdom Hearts 3. Then again, Square Enix has yet to give an update on the status of the aforementioned characters.
On the other hand, fans can refer to the rumours that have been linking many other Disney-based characters to appear in Kingdom Hearts 3. The names include Snow White with her seven dwarves, Hunch Back of Notre Dame alongside Peter Pan, Mulan, The Lion King, Tarzan and Captain Jack Sparrow from Pirates of the Caribbean.
Of course, nothing has been confirmed at the moment and it is best to take the above with a pinch of salt. Regardless, this should give the Kingdom Hearts fans a small scope on the incoming worlds that might appear in Kingdom Hearts 3.