Go to the 8th which is Blue, hes in viridian city.. but if you mean in the jhoto region than you have to go to mahagony town i believe.
He is in the seafoam islands.
in seafoam islands in kanto or mahogany in johto
To Blackthorn City.
on cinnibar island beat the 7th gym 1st tho
Yes, after you beat the 7th gym leader.
mahogany town it is an ice gym or if you mean in kanto it seafoam island and it blanie fire type gym
he is at the lake of rage after you encounter the red gyarados
he is at the sea form islands
well there are 8 gyms so you have to go to cinnabar and talk to blue then he should be at the viridian gym
Use a fire, fighting, or steel type.
It is in Mahogany town in the southwestern corner of the town.
Cinnabar Island Blaine was always 7th guy