| Clue | Source | Date |
|---|---|---|
| Changeling, one squaring the circle, for example? | ||
| One who fills out many forms? | ||
| Morphing sci-fi creature | USA Today | 23 Aug 2018 |
| Morphing sci-fi creature | ||
| The spearfish (anag) — mythical being that can change its form | The Guardian Quick | 06 Nov 2017 |
| Werewolf, e.g. ... or the one responsible for 20-, 34- and 41-Across? | ||
| Sci-fi protean | ||
| Sci-fi chameleon-like alien |