If you mean the 8th gym leader, you have to first go to Saffron City, and beat the guy in the biggist tower there. Afterwards, go back to Viridian City, go into the gym, and he will be there!!!
In the 4th gym ! After you beaten the gym leader in saffron city!!
no
The Gym Leader that allows you to use the HM move Strength in Pokemon FireRed is Erika. Erika is the Gym Leader of Celadon City and is the 4th Gym Leader the player faces.
beat the gym leader
Giovanni
saffron city (psychic type gym leader)
there is no gym leader in lavender town
26
charizard
The 7th leader is Blaine. He uses fire pokemon.
You cannot be a gym leader yourself in any of the Pokemon games, so far.
Gym 5 is located in Safaron City, and the Gym Leader is Sabrina. She uses Psychic type Pokemon, and it's a bit of a puzzel to get to her.