Riley is a strong trainer who can sense aura.
Riley has a cameo appearance in the crowd at the end.
Riley is revealed to be friends with Palmer. Riley has brought the spy robot he captured from Team Galactic during the DP Arc. Under the direction of Palmer, he examines the Battle Frontier's malfunctioning communication system. Riley senses the presence of an external force, originating from Stark Mountain, that is interfering with it.
Byron and Riley seem to know each other well.
Riley mentors Diamond.