no you can not. he is always ahead of you.
Gary is not in the Pokemon mansion.
The same Pokemon he had last time just this time they are level 70-80
Gary does not appear in Celadon City.
Bruno Gary (Rival)Lorelei Agatha
On the top floor after you encounter Gary/Green
He will appear just as you are about to see the Captain of the SS Anne.
If you have chosen Bulbasaur as your starter then Gary chose charmander. Catch a water Pokemon to beat it.
In Pallet Town Daisy Gary's sister will check your pokemon's friendship.
There is one that you get after beating Gary in Saffron city... It's at Lv.25
Gary until you beat him and then you get put into the hall of fame and you become champion
its in silph co, when u fight finish gary(your rival) you talk to the man and he will give you lapras
Red, Blue, Yellow, Green, Gold, Silver, Crystal, Firered, Leafgreen, Heartgold, Soulsilver.