| 2026-06-11 | Clark Kent has one |
| 2024-06-13 | This isn't who you really are |
| 2023-10-20 | Second half? |
| 2022-10-02 | The other you |
| 2020-11-18 | Ziggy Stardust vis-à-vis David Bowie |
| 2020-03-24 | Spider-Man, for Peter Parker |
| 2019-05-09 | Second person? |
| 2019-03-14 | Norman Bates or his mother, in "Psycho" |
| 2018-11-06 | Secondary identity ... or what can be found in 18-, 27-, 40-, 54- and 66-Across |
| 2018-10-20 | Hannah Montana, for one |
| 2017-06-24 | Bosom buddy |
| 2015-10-02 | You again? |
| 2010-08-26 | Doppelgänger |
| 2009-05-15 | Captain Marvel, to Billy Batson |
| 2005-12-11 | Tony Clifton, to comic Andy Kaufman |
| 2005-11-03 | Holmes to Conan Doyle, e.g. |
| 2003-11-06 | A different you |
| 2003-03-14 | Trusted friend |
| 2002-04-02 | Mr. Hyde, to Dr. Jekyll |
| 2001-07-13 | Perfect substitute |
| 2001-03-18 | Trusted friend |
| 2000-04-22 | Substitute |
| 1999-07-18 | One of the "three faces of Eve" |
| 1998-11-05 | Bruce Wayne, to Batman |
| 1998-09-19 | Hyde, to Jekyll |
| 1998-05-09 | Clark Kent, for one |
| 1997-07-27 | Mr. Hyde, e.g. |
| 1997-01-22 | Sidekick |
| 1994-10-27 | Inseparable friend |
| 1993-11-26 | Second self |