In Red, Blue, and Yellow, Professor Oak is available to battle as a trainer.
| Level | Species |
|---|---|
| 66 | Tauros |
| 67 | Exeggutor |
| 68 | Arcanine |
| 69 | Venusaur/Charizard/Blastoise |
| 70 | Gyarados |
Oak can be battled with any of the following three Gameshark codes in RBY:
01E259D0
01015DD0or
01E259D0
01025DD0or
01E259D0
01035DD0Written 2008‒05‒08
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