Um, I would have to say Seymore Flux the first time I fought him. I lost to him so many times but then I decided to level up before i faced him and pwned him. But the first time it was really hard. One weird thing in the game though is that you can pretty much tell when there is gonna be a boss battle, so I kind knew but just tried to go through, it was dumb. Anyway, yeah, first time i fought Flux.
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Proudly paired with: Blazin Torchic- No longer. He is banned.