As you walked into the gym you noticed that nobody was around, not even the gym leader, after about 2 minutes, someone would open the side door, it was the gym leader

He was breathing heavily as he walked in, his face a slight red and his breathing heavy from running

Welcome to the Lumiose gym I'm the gym leader, the name is Clemont. Did you come here to battle?

He fixed his glasses and wiped some oil off of his cheek, he had obviously been working on something before you got here