Talk:Mewtwo VS Shadow/@comment-25172038-20160703072407/@comment-27419230-20160703073358

Interesting question, well we know Mewtwo and Rayquaza, Groudon and Kryoge can primal evolve without a trainer, didn't Latias and Latios mega evolve in that hoopa movie? Seeing the trend I feel it is safe to bet any legendary with a mega evolution can go mega without a trainer while regular Pokemon do require one