If you send over the special Pikachu Coloured Pichu obtained from an event or over WiFi, a special feature will activate. This event takes place in Ilex Forest. When you go by Celebi's Shrine in Ilex Forest when you have the Pikachu Coloured Pichu in your party, a Spiky-Ear Pichu will appear. If you inadvertantly evolve the Pichu into a Pikachu or eventually a Raichu, the event will still work

Like Pokémon Platinum, Heart Gold & Soul Silver have got special details implemented within the game if you send certain Pokémon over.. In Platinum, this allowed for new forms and capturing of certain Pokémon. However, Heart Gold & Soul Silver have got a slightly different take on this.

With the Pikachu Coloured Pichu and the Spiky Eared Pichu in Ilex Forest, the Spiky Eared Pichu shall then join your team. This Pichu is completely unique and you will be unable to get it by any other means. However, there are a variety of new details about it.

However, there is a draw back to the Spiky-eared Pichu. First, the Pichu is unable to evolve into Pikachu and as such not into Raichu. In addition to this, it is unable to be traded to other games.

The Spiky Eared Pichu is always female and appears to be given to you at level 30. It has many attacks that Pichu would not normally know. The details are as follows