Convincing John's Cave is the home of the most persuasive Fraggle in the rock, Convincing John, on Fraggle Rock. The cave lies somewhat on the outskirts of the rooms of the main Fraggle characters. Convincing John resides with his backup singers, the Fragglettes, and his cave includes assorted motivational tools, his two suit coats, and a wide range of objects, in preparation for any and all occasions.