[Fascinated, but still matter of factly] - "This is the power of the Pokémon we've been looking for."

[Thinking aloud, mildly disappointed] - "Team Flare's ultimate weapon... We must contain their power, but it looks like we have to look for another opportunity."

[Scolding, disappointed] - "You found the Mega Ring with the Key Stone in it, but you failed to steal it. You also failed to capture the baby Kangaskhan who can Mega Evolve. Do you have anything to say for yourselves?"