Blue, Lance, Steven, Wallace, Cynthia, or Alder?
Alder. then after i beat him i managed to beat Cynthia, then Lance. then i got Emerald and tackled Wallace
Cynthia. Then Steven, Lance, and my currrent goal is beating Blue in FireRed. Steven was easy as pie.
Blue :) I think the toughest was Cynthia though, she did not put up an easy fight.
Cynthia in Diamond. I still remember landing that final Ice Fang on her Garchomp.
Blue...and it was on Blue Version. :D
It was when I was so much younger, that I don't remember if I thought it was difficult or not.
But I think the easiest champion to beat (for me, anyway) was Alder. By the time it was time to battle him, my Pokemon were loads stronger than his anyway.