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Pokemon Black and White: Gym Leaders
This list of Gym Leaders shows the Pokemon they use, as well as each Pokemon's weaknesses and resistances. With this list, you should know how to beat each Gym Leader.

Striaton City Gym:

Gym Leader Cilan Pokemon Black and White Sprite
Gym Leader Cilan
(If Oshawott was chosen)
Grass
Lillipup Pokemon Black and White SpriteLillipupLv. 12normal
Weakness:
Fighting2x
Resistance:
Ghost0x
Pansage Pokemon Black and White SpritePansageLv. 14grass
Weakness:
Fire2x
Ice2x
Poison2x
Flying2x
Bug2x
Resistance:
Water0.5x
Electric0.5x
Grass0.5x
Ground0.5x

Gym Leader Chili Pokemon Black and White Sprite
Gym Leader Chili
(If Snivy was chosen)
Fire
Lillipup Pokemon Black and White SpriteLillipupLv. 12normal
Weakness:
Fighting2x
Resistance:
Ghost0x
Pansear Pokemon Black and White SpritePansearLv. 14fire
Weakness:
Water2x
Ground2x
Rock2x
Resistance:
Fire0.5x
Grass0.5x
Ice0.5x
Bug0.5x
Steel0.5x

Gym Leader Cress Pokemon Black and White Sprite
Gym Leader Cress
(If Tepig was chosen)
Water
Lillipup Pokemon Black and White SpriteLillipupLv. 12normal
Weakness:
Fighting2x
Resistance:
Ghost0x
Panpour Pokemon Black and White SpritePanpourLv. 14water
Weakness:
Electric2x
Grass2x
Resistance:
Fire0.5x
Water0.5x
Ice0.5x
Steel0.5x

Nacrene City Gym:

Gym Leader Lenora Pokemon Black and White Sprite
Gym Leader Lenora
Normal
Herdier Pokemon Black and White SpriteHerdierLv. 18normal
Weakness:
Fighting2x
Resistance:
Ghost0x
Watchog Pokemon Black and White SpriteWatchogLv. 20normal
Weakness:
Fighting2x
Resistance:
Ghost0x

Castelia City Gym:

Gym Leader Burgh Pokemon Black and White Sprite
Gym Leader Burgh
Bug
Whirlipede Pokemon Black and White SpriteWhirlipedeLv. 21bug
poison
Weakness:
Fire2x
Flying2x
Psychic2x
Rock2x
Resistance:
Grass0.25x
Fighting0.25x
Poison0.5x
Bug0.5x
Dwebble Pokemon Black and White SpriteDwebbleLv. 21bug
rock
Weakness:
Water2x
Rock2x
Steel2x
Resistance:
Normal0.5x
Poison0.5x
Leavanny Pokemon Black and White SpriteLeavannyLv. 23bug
grass
Weakness:
Fire4x
Ice2x
Poison2x
Flying4x
Bug2x
Rock2x
Resistance:
Water0.5x
Electric0.5x
Grass0.25x
Fighting0.5x
Ground0.25x

Nimbasa City Gym:

Gym Leader Elesa Pokemon Black and White Sprite
Gym Leader Elesa
Electric
Emolga Pokemon Black and White SpriteEmolgaLv. 25electric
flying
Weakness:
Ice2x
Rock2x
Resistance:
Grass0.5x
Fighting0.5x
Ground0x
Flying0.5x
Bug0.5x
Steel0.5x
Emolga Pokemon Black and White SpriteEmolgaLv. 25electric
flying
Weakness:
Ice2x
Rock2x
Resistance:
Grass0.5x
Fighting0.5x
Ground0x
Flying0.5x
Bug0.5x
Steel0.5x
Blitzle Pokemon Black and White SpriteBlitzleLv. 27electric
Weakness:
Ground2x
Resistance:
Electric0.5x
Flying0.5x
Steel0.5x

Driftveil City Gym:

Gym Leader Clay Pokemon Black and White Sprite
Gym Leader Clay
Ground
Krokorok Pokemon Black and White SpriteKrokorokLv. 29ground
dark
Weakness:
Water2x
Grass2x
Ice2x
Fighting2x
Bug2x
Resistance:
Electric0x
Poison0.5x
Psychic0x
Rock0.5x
Ghost0.5x
Dark0.5x
Palpitoad Pokemon Black and White SpritePalpitoadLv. 29water
ground
Weakness:
Grass4x
Resistance:
Fire0.5x
Electric0x
Poison0.5x
Rock0.5x
Steel0.5x
Excadrill Pokemon Black and White SpriteExcadrillLv. 31ground
steel
Weakness:
Fire2x
Water2x
Fighting2x
Ground2x
Resistance:
Normal0.5x
Electric0x
Poison0x
Flying0.5x
Psychic0.5x
Bug0.5x
Rock0.25x
Ghost0.5x
Dragon0.5x
Dark0.5x
Steel0.5x

Mistralton City Gym:

Gym Leader Skyla Pokemon Black and White Sprite
Gym Leader Skyla
Flying
Swoobat Pokemon Black and White SpriteSwoobatLv. 33psychic
flying
Weakness:
Electric2x
Ice2x
Rock2x
Ghost2x
Dark2x
Resistance:
Grass0.5x
Fighting0.25x
Ground0x
Psychic0.5x
Unfezant Pokemon Black and White SpriteUnfezantLv. 33normal
flying
Weakness:
Electric2x
Ice2x
Rock2x
Resistance:
Grass0.5x
Ground0x
Bug0.5x
Ghost0x
Swanna Pokemon Black and White SpriteSwannaLv. 35water
flying
Weakness:
Electric4x
Rock2x
Resistance:
Fire0.5x
Water0.5x
Fighting0.5x
Ground0x
Bug0.5x
Steel0.5x

Icirrus City Gym:

Gym Leader Brycen Pokemon Black and White Sprite
Gym Leader Brycen
Ice
Vanillish Pokemon Black and White SpriteVanillishLv. 37ice
Weakness:
Fire2x
Fighting2x
Rock2x
Steel2x
Resistance:
Ice0.5x
Cryogonal Pokemon Black and White SpriteCryogonalLv. 37ice
Weakness:
Fire2x
Fighting2x
Rock2x
Steel2x
Resistance:
Ice0.5x
Beartic Pokemon Black and White SpriteBearticLv. 39ice
Weakness:
Fire2x
Fighting2x
Rock2x
Steel2x
Resistance:
Ice0.5x

Opelucid City Gym:

Gym Leader Drayden Pokemon Black and White Sprite
Gym Leader Drayden
(Black Only)
Dragon

Gym Leader Iris Pokemon Black and White Sprite
Gym Leader Iris
(White Only)
Dragon
Fraxure Pokemon Black and White SpriteFraxureLv. 41dragon
Weakness:
Ice2x
Dragon2x
Resistance:
Fire0.5x
Water0.5x
Electric0.5x
Grass0.5x
Druddigon Pokemon Black and White SpriteDruddigonLv. 41dragon
Weakness:
Ice2x
Dragon2x
Resistance:
Fire0.5x
Water0.5x
Electric0.5x
Grass0.5x
Haxorus Pokemon Black and White SpriteHaxorusLv. 43dragon
Weakness:
Ice2x
Dragon2x
Resistance:
Fire0.5x
Water0.5x
Electric0.5x
Grass0.5x