Key Stones are used along with a Pokémon with a Mega Stone in order to Mega Evolve. They are typically embedded in a personal accessory worn by the trainers.
Known trainers with a Key Stone
Game only
- Calem's Mega Ring (as the player or rival, uses on Absol)
- Serena's Mega Ring (as the player or rival, uses on Absol)
- Brendan's Mega Bracelet (as the player or rival)
- May's Mega Bracelet (as the player or rival)
- Wally's Mega Pendant (uses on Gallade)
- Korrina's Mega Glove (uses on Lucario)
- Lisia's Mega Tiara (uses on Altaria)
- Lysandre's Mega Ring (uses his specially invented cybernetic "Mega Ring" on Gyarados)
- Maxie's Mega Glasses (uses on Camerupt)
- Archie's Mega Anchor (uses on Sharpedo)
- Diantha's Mega Charm (uses on Gardevoir)
- Steven Stone's Mega Stickpin (uses on Metagross)
- Zinnia's Mega Anklet (uses on Salamence)
Anime only
- Red (uses on Charizard - Mega Charizard X)*
- Alain's Mega Ring (uses on Charizard to become Mega Charizard X)*
- Remo's Mega Parasol (uses on Garchoo)*
- Astrid's Mega Earring (uses on Absol)*
- Siebold's Mega Buckle (uses on Blastoise)*
- Gurkinn's Mega Glove (uses on Lucario)*
- Mabel's Mega Staff (uses on Mawile)*
- Meyer's Mega Belt (uses on Blaziken)*
- A trainer's Mega Watch (uses on Venusaur)*
- A trainer's Mega Turban (uses on Alakazam)*
- A trainer's Mega Puppet (uses on Banette)*
- Malva's Mega Charm (uses on Houndoom)*
- Wulfric's Mega Locket (uses on Abamasnow)*
- Trevor's Mega Camera (uses on Charizard to become Mega Charizard Y)*
- Sawyer's Mega Bookmarker (uses on Sceptile)*
- Professor Sycamore (uses on Garchomp)*
- Chymia's Mega Bracelet (uses on Gardevoir)*
- Brock's Mega Charm (uses on Steelix)*
- Misty's Mega Hairband (uses on Gyarados)*
- Gozu's Mega Dog-Tag Necklace (uses on Aggron)*
- Ilima's Mega Wrist Band (uses on Kangaskhan)*
Gallery
Game
Official artwork of Calem's Mega Ring
Official artwork of Serena's Mega Ring
Official artwork of Brendan's Mega Bracelet
Official artwork of May's Mega Bracelet
Official artwork of Dianthia's Mega Charm
