Chuck got there a bit earlier than they did, entering the room and confronting Maribel.  She turned to him and said "Oh, the sick one.  What are you doing here?"  "Where is the Stufful?" Chuck asked, glaring at her.  "Hm?" she raised her eyebrow.  "I said, Where. Is. The. Stufful?" Chuck repeated, pulling down his face mask.  "You can either tell me now, or Zenni and I can knock it out of you!"  With that, he chucked a Pokeball and out popped his Blastoise, Zenni.