Hope that name changes...
Information about characters that will appear in the 17th movie was unveiled on the official movie website. Several Carbink with different physical appearances will also be in the movie named Daii, Majima, Knight, and Joke. There will also be a Mega Absol, an unknown trainer, and their Mega Scizor.
Marilyn Flame - A beautiful female thief with her sights set on Diancie. Delphox is her partner.
Ninja Riot - A ninja thief that is after Diancie who hides his face with a mask. Greninja is his partner.
Argus Steel - Millis's father. Ownes a big plane. Likes chocolate.
Millis Steel - Argus's daughter. Saves Diancie when she is caught by Team Rocket. Chesnaught is her partner.
Daii - The elder of the country of Diamond Ore. A living witness to the Great Destruction that once occurred in Kalos.
Majima, Knight, and Joke - Butlers from the country of Diamond Ore. They work for Diancie, and left together with her on her journey.
Diancie is the princess of the Country of Diamond Ore, which is the stage for this year's movie. The Country of Diamond Ore is a beautiful underground country, where many Jewel Pokémon Carbink live peacefully. And in the country is a huge diamond known as the Holy Diamond... The Holy Diamond is an important energy source that maintains the Ore Country, and has fulfilled this role for a long time. The Holy Diamond was created by Princess Diancie alone. However, she no longer has the power she once had. And... the time is near. The life of the Holy Diamond is almost exhausted. The beautiful Ore Country will be destroyed! But then, Diancie meets with Ash and Pikachu, and decides to leave on a journey to seek the holy powers of the Life Pokémon, Xerneas, in order to save her country. But on the way, the female thief Marilyn, the ninja thief Riot, and Team Rocket all attack them, seeking Diancie's power. With help from the parent-and-child Millis and Argus, the group manages to make it out of danger and continue their journey, but then they find the cocoon of the sleeping Destruction Pokémon Yveltal, which once annihilated all life in Kalos, blocking their way---