"Kingdom Hearts 3," announced during D23 Expo by Square Enix and Disney, is adding "Big Hero 6" to its world. Baymax and Sora will be joining forces to fight a dark Baymax?

During the Expo, Sora was seen riding on Baymax, and they were fighting a new villain. Comic Book found out that the dark Baymax, who's being manipulated by the antagonist of the game, was the one that was left in the portal.

"Kingdom Hearts 3" will continue the events of the Disney movie, according to the report of IGN. The setting is in San Fransokyo, but it's still unknown how or if there are any other characters from the film who will join Sora's gang.

"The themes in Kingdom Hearts and Big Hero 6 match very well," Ray Conli, the film producer, stated. "For instance there's friendship, really important to both stories, and then of course light over darkness."

"Big Hero 6 is such a special film for me, and we always made sure that each action sequence had a very special meaning," Conli said.

Series developer Larry Sparks additionally said that "Big Hero 6" was a perfect fit for "Kingdom Hearts 3," which was a colorful world filled with action.  

Square Enix game producer Shinji Hashimoto said that the development of this new game has been ongoing for more than two years.

The film was released on Nov. 7, 2014. The story centered in the plus-sized inflatable robot Baymax, and the prodigy Hiro Hamada.

To uncover the mystery after a devastating event that happened within the city, Hiro transformed his friends into a group of high-tech superheros, and called themselves "Big Hero 6."

No further details about "Kingdom Hearts 3," which was first announced at the E3 2013, were revealed, according to Kotaku. Until now, the game still has no release date.

"Kingdom Hearts 3" is a role-playing game and will be available in PlayStation 4 and Xbox One.