You can find professor Oak, in Pallet town for older Pokemon games. For most of the Pokemon games there isn't any professor oak you can only find professor Rowan in Samage town.Usually in some places in the Pokemon world, you can find Dawn in front of one of the places were one of the professors work.
there is no professor oak in ruby and sapphire
get national Dex by going to Rowen's lab
you have to complete the national pokedex and see professor rowan. then professor oak will come in and give you the pokeradar.
Professor oak is always in his lab in pallet town.
Finish the first one and then bring it to professor oak then he will give it to you.
No, Ash didn't send his Gible to Professor Oak.
He is in a house in the southwest corner of the city.
no,professor Oak is not in x and y, he is there in indigo
You have to Complete the sinnoh pokedex and then see Professor Rowan in his lab at Sandgem town, then another professor from kanto called Professor Oak will give it to you as a gift.
"How do you catch Professor Oak" You can't! He's a person NOT a pokemon. Possibly with the Action Replay
Pikachu was in the Poke Ball that Ash had received from Professor Oak.
you have to see all the Pokemon through 150 then talk to professor oak