Thanks for the info Aura! I will try my best to defeat Sunny but i agree with you on Spirit, he is really hard to beat! I will try my luck with him to try and beat him!
So Spirit and Sunny are the last two you need, huh? I saw your posts on Blues` profile, in terms of sheer difficulty, I managed to defeat Sunny without too much trouble, though I needed a rematch because I lost the first battle due to slight hax xD, granted, my team is pretty unorthodox. Spirit is ridiculously strong, even with my team. He`s great with prediction and execution of strategies. I just battled him two days ago, my previous (and very first) battle with him being 6 months before, and he still managed to defeat me pretty easily. With Sunny, just make sure your own core strategy is well-executed, and efficient enough for the player-opponent KO ratio, and you should be alright. You may want a special ace up your sleeves, though.
As for Spirit, I have absolutely no idea how to defeat him as of now.