Who's your Rival in Red/Blue?

Question

And some info.

Answer 1

Not sure exactly what info is requested... but I hope this link says enough:

Blue - your rival in Generation I games

I believe he is Professor Oak's grandson, if I remember correctly at the start of the game Professor Oak says "This is my grandson... uhh... what was his name?" and then you remind Oak of his grandson's name.

Comments

That's absolutely correct. Oak himself said that his grandson and the player "were rivals since [they] were babies."

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I am positive it is Gary. Details: If you choose grass type=fire type fire type=water type water type
type=grass type.