Spiky eared Pichu doesn't appear in the pokedex, and there are differences between the spiky eared one and the regular one, like one is only obtainable by event but the other one is obtainable in different areas in different games. Also it could be added to the Pichu pokedex.
- Spiky eared can't be shiny/ regular can be shiny
- Spiky eared can't be bred/ regular can be bred
So if possible, please add this other version of pichu to the pokedex.