"How do you catch Professor Oak" You can't! He's a person NOT a pokemon. Possibly with the Action Replay
After you catch him, you should go to professor oak.
You can't catch charizard in Pokemon soul silver. You can get a charmander from professor oak.
Beat the elite 4 then Professor Oak will give it to you.
no you have to catch it yourself
you don't, you get it as a starter from professor oak after beating Red
After catching Kyogre, obtain a Groudon from a friend with Pokemon SoulSilver. You only need the Groudon temporarily. Talk to Professor Oak with both in your party, and Professor Oak will give you the Jade Orb to catch Raquayza.
catch 60 Pokemon then talk to professor oak.
There are some pokemon you can only catch by fishing.
Pikachu, He didnt exactly catch Pikachu it was given to him by Professor Oak. The first pokemon he caught was Caterpie
You cannot catch a Totodile in FireRed. However, if you catch so many Pokémon Professor Oak will you give you one.
yes, but in order to get Requaza you will need to eventually catch or trade over Groudon.
there is no professor oak in ruby and sapphire