Uhh...I dunno...well, only 3 battles really were a challenge...OK. Here it goes:
1.Red. G/S/C/HG/SS. Really...he's strong, isn't he? Well, I could beat him, only 3 times. Really, only 3 times...I had to use Hyper potions and Max revives all the time...O_O
2. Ghetsis. BW. OK...his team was a challengee, BUT I could beat him in my 3rd battle because my friend traded his Rayquaza for my ChanseyLugia for a while.
3. Whitney G/S/C/HG/SS. DAT MILTANK!