Team Flare boss
Lysandre was present at the battle of Vaniville Town; without his knowledge, his silhouette was captured on camera.
Later, in a café in Lumiose City, he meets Y, Trevor, Tierno, and Shauna, and he overhears Trevor whispering to Shauna and Tierno, telling them about the silhouette in the photo. Lysandre unleashes his Gyarados, Pyroar, and Mienfoo, surrounding the three and demanding the photo. He only stands down when Diantha appears with her Mega Gardevoir. He and Diantha have a brief conversation about beauty before Lysandre receives a call from Xerosic, asking about whether he should move Xerneas's tree.
Lysandre leaves soon after, flying somewhere on Gyarados's back. During the flight, he thinks back to Diantha's Mega Evolution and he uncurls his fist, revealing a Mega Stone, as he tells Gyarados that soon he too will be capable of Mega Evolution.
Lysandre is severe and ambitious. He is not disinclined to intimidate and threaten to get his way.
Pyroar is male. He and the others surrounded Trevor, Shauna, and Tierno when Lysandre is trying to get the incriminating photo from Trevor.
He and Diantha are on speaking terms, though Diantha does not seem to trust him, since she felt it necessary to protect Trevor, Y, Shauna, and Tierno from Lysandre's Pokémon.
He and Professor Sycamore seem to be friends.