Yeah, if you read the "Mark sprite" "description" you saw onde Easter-egg: old hair and cap position of Combusken.
I think that have another easter-egg like this, but I don't remember, so, these are 2 of my old draw...ings? Nah, I used the SD card and now, SEE! Diferent, no? Foot by foot, young padawn... And now, have fun.
2 old Combusken "Desings" (3DS)