| Answer | Crossword Clue |
|---|---|
| TIC | First X, potentially |
| TIC | First X |
| TIC | First X? |
| TIC | The first X? |
| TIC | First X, maybe |
| TIC | First X, say |
| TIC | First X or O |
| TIC | First X in a game |
| TIC | The first X of XXX |
| TIC | First X or O, say |
| SPACESHIP | X-15 may be the first. |
| PLATT | Oliver of "X-Men: First Class" |
| PREQUEL | "X-Men: First Class," for one |
| TIC | The first X of X-X-X |
| DANA | Agent Scully's first name on "The X-Files" |
| JANUARYJONES | Emma Frost portrayer in "X-Men: First Class" |
| MTSNOW | Cohost of the first X Games (1995's Extreme Games) |
