As many of you probably already know, for a time on your copies of diamond/pearl/platinum you could have recieved a pichu coloured pichu. If you did recieve that pichu then you could get a spiky eared pichu sa pamamagitan ng trading it into a copy of pokemon puso gold/soul silver. To do this -

1. First play the game up until after the segundo gym. Trade in your pikachu coloured pichu and make sure it is first in your party
2. Go left out of Azelea town and into Ilex forest.
3. If you haven't already then help out the boy and catch the Farfetche'd. He wil give you the hm cut.
4. Teach the hm to one of your pokemon and cut down the puno near to where the guy you helped was standing.
5. Walk up that way and watch the event unfold...

The pichu you get with this event cannot be evolved however it has some interesting moves that you wouldn't normally expect a pichu to learn.

DON'T WORRY!
If you accidentally evolved your pikachu coloured pichu the event will still work.

HAVE FUN! =D