Wikia

Gym Leaders: Sinnoh Region
Gym Leader	Gym	Type	Badge
	Gym Leader: Roark (Japanese: ヒョウタ, Hyōta) Gym Leader Location: Oreburgh City (Japanese: クロガネシティ, Kurogane Shiti)		Coal Badge
	Gym Leader: Gardenia (Japanese: ナタネ, Natane) Gym Leader Location: Eterna City (Japanese: ハクタイシティ, Hakutai Shiti)		Forest Badge
	Gym Leader: Maylene (Japanese: スモモ, Sumomo) Gym Leader Location: Veilstone City (Japanese: トバリシティ, Tobari Shiti)		Cobble Badge
	Gym Leader: Crasher Wake (Japanese: マキシマム仮面, Makushimamu Kamen) Gym Leader Location: Pastoria City (Japanese: ノモセシティ, Nomose Shiti)		Fen Badge
	Gym Leader: Fantina (Japanese: メリッサ, Merissa) Gym Leader Location: Hearthome City (Japanese: ヨスガシティ, Yosuga Shiti)		Relic Badge
	Gym Leader: Byron (Japanese: トウガン, Tōgan) Gym Leader Location: Canalave City (Japanese: ミオシティ, Mio Shiti)		Mine Badge
	Gym Leader: Candice (Japanese: スズナ, Suzuna) Gym Leader Location: Snowpoint City (Japanese: キッサキシティ, Kissaki Shiti)		Icicle Badge
	Gym Leader: Volkner (Japanese: デンジ, Denzi) Gym Leader Location: Sunyshore City (Japanese: ナギサシティ, Nagisa Shiti)		Beacon Badge