My team was really only like 4 Pokemon, one was filler for tanking/switching, and the other just didn't get used.
Pikachu (Light Ball variety)*
Palkia- Mostly used Heal block to stop Cynthia's Milotic using Aqua Ring.
Pikachu - I can't use her effectively. She's got a great nature and spred of stats, but I just can't bring myself to use anything that can't take a hit. She just kinda sat there, looking cute.
Infernape - He made the backbone of my team. He just went to hide in the corner when Bertha showed up... D:
Lopunny - He was a good all around bet. As someone else put it, it was a good way to take out Flint's Drifblim with ease. Mine was pretty rugged, he sported Foresight and Magic Coat throughout the league. Such a good boy. :>
Roserade - Pretty boring moveset at the time, but the leech seed and Big Root combo saved her butt more times than I care to remember.
Golduck - Fast and deadly. With the exception of my two fillers, my team was outrunning a good portion of the opponents. Slim here was a special sweeper. And boy did he sweeeeeep.
Just especially proud I actually finished. I'm ashamed to admit I've been playing since RBY, and never got past the champion before now.