first get a ice type Pokemon then go threw the whole gym face gym leader and get the badge
In the first city
It depends on the type of Pokemon you have, how you battle, your Pokemon's levels, and the gym leaders Pokemon stats and moves and type. Mine was Morty because I had four normal type Pokemon. I used Feraligatr last and wooped his butt!
you can take on any gym leader in kanto in any order (excluding blue you have to battle him last)
You have to battle the last gym leader Blue in viridian city in kanto reigion.
Heas to Sunyshore to battle the last one.
From mahogany city go up to the ice path and cross it.At the end is blackthorn city.
Go to sootoplis city to battle Gorudon and beat the last gym leader.
If you are referring to Clair (the last Gym Leader of the main story) she uses Dragon-types. If you are referring to Blue (the last Gym Leader of the Kanto region post-main story) he doesn't use any one type in particular.
first you have to get the pass after beating the last gym leader i think professor elm gives you the pass and then you get to go inside
get all badges and then you can battle arceus in the last map from the johto leaders (the dragon leader)
The second gym leader is brawley of Dewford town. You will come to the PetalburgGym second, but that's the last gym leader you'll battle.
you must frist go to seafoam island where blaine is, he is the 15th gym leader, then go to cinnibar island and a character who is behind the Pokemon center will then say that he is the last gym leader, once you have talked to him he will go to viridian city gym, he is the last gym leader. this is for heartgold and soulsilver :) hope this helped.