Nero
The moment Nero heard the unrecognized voice behind him, he turned around swiftly, eyebrows furrowing into a rather dreadful glare mostly because of how harsh he had taken the words. Then, the young man simply began to walk away as if Nero didn't matter at all. "Hey now," The boy shouted, taking a step towards Joshua, grunting slightly. "Who the hell are you, and how are you so sure I'm not worth your time? I'd bet you're just trying to show off and then run off without taking the responsability to
prove it." The Eevee in Nero's shoulder seemed to agree with him, given how it growled slightly towards the (unknown to Nero) gym leader.