There is more on the bio of his reference Team Soul Izzy picture, but basically he was given as a pet before Izzy decided to train--hence he's a little bit..of a butterball, as Izzy gently teased him. He definitely had low self esteem and was extremely shy; a huge jump from the cocky pestilence he is today as a Raichu! The magnet is huge because Pichu are smaller, obviously, and even though he is on the team and on the "wrong side", it's because he's not a Pichu anymore