Well, I got lucky and was offered a shiny Piplup at the start of the game. Now, at level 45 (and the last evolution) I started noticing that gets around 50% more exp, stating that Empoleon got a boosted exp of *insert number here*.... Does it have a connection?
PS: In Double Battles, he earns more exp thn the other pokemon. He DOES NOT have EXP Share...
PS: In Double Battles, he earns more exp thn the other pokemon. He DOES NOT have EXP Share...