Mega Evolution

List of P that can mega evolve:

Mega Venusaur

Mega Charizard X

Mega Charizard Y

Mega Blastoise


 * Your starter comes from Fuji, Green gives you his (switched for mega Alakazam), and the last comes from Oak after you beat him
 * *sort out charizard conundrum

Mega Butterfree


 * bug/fairy
 * bug/fairy

Mega Pigeot


 * Guy in Saffron City?

Mega Beedrill


 * Viridian Forest

Mega Alakazam


 * Rock Tunnel

Mega Machamp


 * Fighting Dojo?

Mega Slowbro


 * Underwater (Cerise Island)

Mega Gengar


 * Ghost Girl
 * "Do you believe in ghosts?"
 * > yes
 * "Really? So there are believers... Check your pocket"
 * When you open your bag, it autoscrolls you all the way down to gengarite and does the Item Get! chime, letting you know that you got the gengarite. When you exit your bag, the ghost girl is gone.

Mega Kingler


 * Underwater (Seafoam Islands)
 * pure water type
 * tough claws ability

Mega Marowak


 * Pokemon Tower (on Mother Marowak's honorary gravestone)

Mega Kangaskhan


 * Warden Baboa, if you beat him (post game)

Mega Pinsir


 * Safari Zone (exclusive)

Mega Gyarados


 * Misty, postgame

Mega Lapras


 * From Silph Co Guy

Mega Aerodactyl


 * Pewter City Museum Aide (Showing him Aerodactyl, post-mega evolution)

Mega Snorlax



Mega Mewtwo X

Mega Mewtwo Y


 * One is attatched to Mewtwo, who Mega only Mega Evolves if the player does.
 * The other is at the bottom of the sea (New Island Wreckage) Hint fro Giovanni, Blaine, Fuji

Mega Scizor


 * Safari Zone (exclusive)

Mega Steelix


 * Brock, postgame