Since Clair (the gym leader) is a dragon type, I suggest using a powerful ice type.
You can't be a gym leader in any of the pokemon games, you can jusr beat them and earn the badges you need to complete the elite 4
You need to beat Pryce the second last gym leader. He uses ice Pokemon so bring fire or steel Pokemon.
You need to beat Team Rocket then Beat the gym leader and he'll go away
Well Claire has dragon types so you need Ice types to defeat her.
you need to beat the eighth gym leader and then go to prof.elm lab and he will give you the master ball
you need a physic type
your Pokemon need to be lv 40 to beat him
you need to beat a gym leader .
You need REALLY strong Pokemon the defeat the leader. His minions are easy. The leader has three Pokemon and they are all fire.
No, you need to beat Red (on Mt. Silver) to get them. To get to Red, you need to beat the Kanto Gym Leaders. Red has high leveled pokemon, so watch out. CFS
you need to ev train if not use legendarys
you face six people then the seventh battle is the leader