I've seen 151 Pokemon and been told to go to the lab to show Prof. Rowan *BUT* when I go to the lab, the only people there are his assistants. What's going on?
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Try going back to the lake where you saw him at the beginning of the game, and look for the old professor there. If he is not there, I really don't know what to tell you, hope this helps.
You should probably beat the Elite Four, first, if you haven't... Otherwise, I'm not sure what else to tell you.
Try going to Eterna City and go to the bottom left house,Prof. Oak will be in there.
Professor is not there and I've been at the pal park seen all 151 Pokemon and beaten the elite four plese help.
You probably used walk through walls cheat he is probably in jublife city at the top
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