He is in the cave on Seafoam Island, which is east from Cinnabar.
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hes at seafoam islands in kanto
he is at the sea form islands
On Pokemon Silver, Gold, and Crystal Blaine is on Cinnabar Island. On HeartGold and SoulSilver he is at the Seafoam Islands.
Go to the floor above it and push the boulders in the holes 1 for each you should be able to figure it out now
snowpoint city