"Your mom is a Nurse Joy?" Chuck asked, surprised at this outcome.  He went up to greet them and said "Hello, my name is Chuck North, from Lumiose City in Kalos.  I travelled with your son a few years ago here in Kanto, before having to return home to deal with some problems with Team Flare and my family's Daycare, and have only recently come back to continue my journey, and just so happened to run into him again."