Despite his small size, Pikachu is one of Ash's most dependable and strongest partners. Whenever Ash isn't around, Pikachu takes a leadership position for the team. He is curious, smart, friendly, and shares Ash's fondness for battling. Pikachu is a very determined Pokémon and unwilling to give up in tough situations. He is responsible and often looks after younger Pokémon. Although stubborn at times, he obeys Ash's commands. He can imitate some Pokémon by making their face shapes. Pika Pi.