| Clue | Source | Date |
|---|---|---|
| Role for Nicholson, Ledger and Leto | Wall Street Journal | 28 Jun 2018 |
| Role for Nicholson, Ledger and Leto | ||
| Villain played by Heath Ledger | The Washington Post | 04 Jul 2016 |
| 1989 Jack Nicholson role | LA Times Daily | 03 Jun 2016 |
| 1989 Jack Nicholson role | ||
| "Batman" villain | ||
| 1973 hit for the Steve Miller Band | ||
| "Batman" villain | ||
| 17-Across nemesis | ||
| 17-Across nemesis |