https://wccftech.com/kingdom-hearts-iii-remind-final-fantasy-characters/

The Kingdom Hearts III ReMIND DLC will not just add new bosses to the game, but it will also bring back characters from the Final Fantasy series.

A new trailer released for the DLC confirms that Aerith, Yuffie, and Squall, as Leon, will appear in the new DLC. The trailer has been removed shortly after its posting, but USGamer managed to capture it and share it again. You can find it below.