It would be kinda cool with a Pikachu based on its anime counterpart.
It should have some unique item that can only be used on Pikachu, maybe called "Ash's Cap". Boosting Special Attack, Attack and Speed 100%. Plus, some unique ability to hurt Ground-types. It's moves should be Volt Tackle, Thunderbolt, Iron Tail and Quick Attack, no doubt. Then, it would be like its anime counterpart.
It should have some unique item that can only be used on Pikachu, maybe called "Ash's Cap". Boosting Special Attack, Attack and Speed 100%. Plus, some unique ability to hurt Ground-types. It's moves should be Volt Tackle, Thunderbolt, Iron Tail and Quick Attack, no doubt. Then, it would be like its anime counterpart.