get stronger ,train then beat the eighth gym leader after that get SUPER STRONG and destroy the elite four
Defeat the 8th
To get the 8th Gym Leader to return to his Gym in Viridian City, you must defeat all 7 other Gym Leaders.
you have to defeat the gym leader in the 5th gym or something ...
I get the strongest Pokemon I can get without them disobeying me then I battle the gym leader. I usually focus one or two Pokemon that could defeat the gym leader alone and I train them until I think that they are good enough to defeat the gym leader.
You defeat the trainers and the gym leader, Misty. Electric attacks are best for this gym.
u must win 1-7 gym leader gym: brock misty lt.surge erika :defeat them all koga Sabrina blaine and Giovanni
you have to get the legendary in the game
You go on to defeat the eight gym leader.
well you will have to defeat the 5th gym leader and once you defeated her she will give you the TM move shadow claw you will find the 5th gym leader at hearthome city before you deafeat the gym leader you will need to defeat the 4th gym leader in order to defeat the 5th gym leader
Defeat the Cianwood city gym leader, then talk to a lady outside the gym and talk to her. She'll give you HM02 (Fly) and if you try asking BEFORE you beat the gym leader she'll not give it to you then, but once you defeat the gym leader.
You have to defeat the other 15 gym leaders, and then talk to Blue (the 16th gym leader) on Cinnabar Island. He will go to Viridian City once you show him the 7 Kanto badges you have obtained.
The gym leader you must defeat is Morty, the ghost-type gym leader who lives in Ecruteak. To defeat him, try using types such as ghost, dark, or psychic.