RE: Mega Evolution: Mega Pokémon & Info [List Incomplete]
After beating the game, go to Luminose Station in Luminose City. Inside, you'll meet Professor Sycamore. He'll give you access to Kiloude City. While there, win ONE battle at the Battle Maison. Once you're done, go outside, and head to the north part of the city. Above the lake you'll find your rival. Beat him/her in battle and he/she will give you Absolite, the Absol mega stone. Next, go to Anistar City. At the northern-most part of the city is a giant crystalline sundial. Professor Sycamore should be standing in front of it. He'll then update your Mega Ring so you can find several mega stones during your travels.
IMPORTANT NOTE: You can only find these mega stones between 8:00pm - 9:00 pm (short window!). When you spot a stone, it will be shown with a purple sparkle.
Aggron(Y)/Tyranitar(X) - In the Cyllage Gym (second gym), climb the first wall, then go right, and climb the next wall. The stone will be in the corner.
Alakazam - In Reflecting Cave, go to the third floor. Head to the back of the room, and you'll see a hidden doorway reflecting off the mirror. Go through this little passage (you can find Gyro Ball in here), and come out the other side. Head left to the light shining down. The stone will be in the middle of the light.
Banette - Top of the Chamber of Emptiness, bottom of Route 22.
Garchomp - In Victory Road, you probably passed by a lighthouse shaped tower near the end. It's in front of the tower (Rock Smash required).
Gyarados - In Couriway Town, there is an area of small waterfalls. In front of one waterfall is the stone.
Heracross(Y)/Pinsir(X) - In Santalune Forest (enter from where you first enter the forest), go up, following the double layered grass to the left until the camera angle changes. You'll see the stone in the grass.
Houndoom(Y)/Manectric(X) - In Route 16, you'll see skaters circling around a rock. Below the rock is the stone.
Kangaskhan - Enter Glittering Cave, and take the first right. The stone will be right in front of you.
Mawile - Inside Shabboneau Castle, go upstairs. The stone will be right above the stairs on the left.
Medicham - Lavarre City, in front of the well.
Scizor - Remember that Abomasnow that gave you its mega stone? Scizor's is right behind that Abomasnow. Might be hard to see.
I didn't expect it from Charizard, however, so I wouldn't be surprised if it happened for more Pokémon. Maybe even all of them?
