As a challenging trainer enters the Amp City gym they are met with a electrifying athmosphere. The gym's speakers play a guitar riff while the trainer moves into the gym. Once they arrive at the arena they are met with a stage where a woman is playing a electric guitar while the spotlight is consentrated on her. When she spots the trainer she turns to them and speaks into her mic with the music playing,

"Welcome to Amp City gym. The Thunder Stage!"