umm, i'll choose different kind of pokemons since that's how champios should be XD, my pokemons would be:
Pikachu, I just love him:>
Charizard, My first pokemon ever :D
Umbreon, best eeveevolution, and my first shiny ever :P
Torterra, I like it and the starter I took on my friend's platinium game XD
Gengar, I really like this one, besides of powerful its pretty cool! :)
Empoleon, The pokemon my friend had, :D
And, I prefer the champions who have different types of pokemons, so he'll be more equilibrated XD