| Episode complete credited cast: |
 | Ryan Seacrest | - | Himself - Host |
 | Harry Connick Jr. | - | Himself - Judge |
 | Jennifer Lopez | - | Herself - Judge |
 | Keith Urban | - | Himself - Judge |
| Rest of cast listed alphabetically: |
 | Paula Abdul | - | Herself (archive footage) |
 | Clay Aiken | - | Himself - Season 2 Runner-Up |
 | Ellis Banks | - | Himself - Contestant |
| Jenn Blosil | - | Herself - Contestant |
| Harrison Cohen | - | Himself - Contestant |
| Isaac Cole | - | Himself - Contestant |
 | Simon Cowell | - | Himself (archive footage) |
 | John Arthur Greene | - | Himself - Contestant |
| Derek Huffman | - | Himself - Contestant |
| Gianna Isabella | - | Herself - Contestant |
 | Randy Jackson | - | Himself (archive footage) |
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