| Clue | Source | Date |
|---|---|---|
| Alter ego for Lex Luthor | New York Times | 20 Sep 2018 |
| Villain in a 1950 Superman serial | Wall Street Journal | 14 Apr 2018 |
| Alter ego for Lex Luthor | ||
| Villain in a 1950 Superman serial | ||
| Lex Luthor alter ego, once | ||
| One of Lex Luthor's alter egos |