Pikachu is your loyal starter Pokémon in Pokémon Yellow and will follow you everywhere. Unlike other versions, your Pikachu cannot evolve into Raichu in Yellow unless traded to another game and exposed to a Thunder Stone. This means it will remain a Pikachu throughout your main adventure.

Key Strengths:
- High Speed & Special Attack: Pikachu is naturally fast and hits hard with Electric-type moves.
- Early Access to Electric Moves: 'Thunder Shock' is available early, making it invaluable against Flying and Water types.
- HM Compatibility: Can learn 'Flash' (HM05), which is useful for navigating dark caves.
Weaknesses:
- Low Defenses: Pikachu is quite frail and can be knocked out easily by strong attacks.
- Type Disadvantage: Struggles against Ground, Grass, and Dragon types.
- No Evolution: Limits its overall stat potential compared to other fully evolved Pokémon.
Despite its weaknesses, Pikachu is a strong early-game Pokémon and a fan favorite. Keep it healthy and use it strategically against favorable matchups.