- Age Without Youth: Alfred Fellig is immortal, but doesn't appreciate it and envies people who die. Even young. Averted, because unlike the man of the Greek myth after which the episode was named, Fellig doesn't continue to age; he just remains in his 60s.
- Chekhov's Gun: One dating all the way back to the Season 3 episode "Clyde Bruckmans Final Repose".
- Deliberately Monochrome: Alfed Fellig sees when people are about to die. Their colour fades and he sees them in black and white.
- I Cannot Self-Terminate: Fellig tried several time to commit suicide, but nothing works. He's only in pain.
- Older Than They Look: Alfred Fellig from "Tithonus" was a photographer who gained immortality by tricking Death.
- Spooky Photographs: Felling tries to get spectral snap type of the trope and get a photograph of Death. The actual photos are more of the foreboding type because he can sense who is gonna die.
- Who Wants to Live Forever?: Life gets boring when you lose your drive. Love doesn't last forever, either.
- Wall Slump: Scully. Agent young guy shot Fellig, but the effect of the bullet worked on Scully who slipped down by the wall. The obligatory smear of blood is visible as well.