Blue

Blue Oak is the rival of Red in Pokemon Red/Blue/Green and Leaf in their remakes Pokemon FireRed/LeafGreen. He is the Grandson of Professor Oak and has a sister named Daisy.

Pokemon Red/Blue
You first see Blue in his Grandfather's Lab in Pallet Town waiting for him. Later when the player attempts to leave Pallet Town he is stopped by Oak and then escorted to his Lab where he chooses a starter, with Blue choosing the type weakest against the one chosen.

He is fought a total of 8 times. They are fought in this order:
 * 1) Oak's Lab
 * 2) Route 22 (Optional)
 * 3) Cerulean City
 * 4) S.S Anne
 * 5) Pokemon Tower
 * 6) Silph Co.
 * 7) Route 22
 * 8) Champion