At the Tower of Mastery, Gurkinn offers a single Mega Ring to the player and their friends, but due to only having a single Mega Ring to give away, requests that they decide among themselves who should receive it. Of the group, only the player and Serena/Calem are interested in receiving it, so the two battle to decide who should receive it. Upon defeating Serena/Calem, the player must obtain the Rumble Badge at the Shalour Gym and then go to the top of the Tower of Mastery to receive the ring from Korrina.
After the player has defeated their rival in Kiloude City once, Professor Sycamore will upgrade the player's Mega Ring at the Anistar Sundial by having the player touch the sundial. Once upgraded, the player can then find hidden Mega Stones around Kalos from 8:00 PM to 9:00 PM.
Non-player character appearances
In Pokémon X and Y, after the player has visited Kiloude City and participated in a battle at the Battle Maison, Calem/Serena will battle the player once per day at the northern part of the city, having obtained their own Mega Ring.
In Mega Evolution Special I, Alain was seen wearing a Mega Ring, which he uses to Mega Evolve his Charizard into Mega Charizard X. In Mega Evolution Special II, it was revealed that he received it from Lysandre. After the Team Flare crisis, Alain gave his Mega Ring to the authorities to be used as evidence and resolved to find himself a new Key Stone on his own.
In Pinsir Glares, Y was made a Mega Evolution successor by Gurkinn and given a Mega Ring outfitted with the Key Stone from Gurkinn's Mega Glove. With it, she can Mega Evolve her Solsol into Mega Absol.
