My first pokemon TGC card (the first I looked at, it was either a starter or booster pack) was an awesome looking yellow mouse thing. I quickly fell in love with it.
So I, soon after, hear whispers of a television show based on the same series as the cards were- lo! and behold- 'pikachu' was the main character. So, a little generic, but pikachu. If you forget about how mean it was to force you to rely on an electric type in a world where the first boss is anti-electric in every way, he was pretty good.