Professor Oak

Professor Oak is the head professor in the game. However he does not play nearly as important of a role in Zeta/Omicron as in the canon games. While he does give you your starter Pokémon, he does not encounter you very much throughout the story. Sometimes he can be seen with Aria,N| N, and Cyrus while confronting Team Asgard/Olympus.

Police Club Quest
In the police club quest the Professor is encountered back in his lab in Pallet Town where Team Rocket steals the Strange Machine from him. He mistakes the player for a Rocket Grunt and challenge them.