30 Rock is littered with hints to Kenneth's immortality. This is a collection of the evidence, which really says it all. It's a pretty ironclad case.
  1. He does not sleep.
    Static
  2. He has no reflection.
    Static
  3. He's still alive in the distant future.
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  4. He hears a tone so low only people over 40 can hear it.
    Local
  5. And a callback to it.
    Static
  6. His reaction to Tracy saying he shouldn't want to be a page forever.
    Local
  7. When he started working at NBC, an 8-year old Shirley Temple taught him how to roll cigarettes.
    Static
  8. His reaction to Suze Orman asking him about his age.
    Local
  9. When he voiced the main concerns "a friend" has about new rules for pages.
    Local
  10. His mother's story of his birth.
    Local
  11. Sounds about right.
    Static
  12. He has been wearing his page uniform since...
    Static
  13. He had a bird for a suspiciously long time.
    Static
  14. He sees the world a little differently than the rest of us.
    Static
  15. He seems to have a close relationship with the Biblical Jacob.
    Static
  16. Jacob does not play nice with Kenneth.
    Static
  17. LEAVE HIM ALONE, JACOB!
    Static
  18. He appears in flashbacks to events that happened decades ago.
    Static
  19. Static
  20. He counts himself among the elderly.
    Local
  21. He doesn't have a smell.
    Static
  22. His hair may not be real.
    Static
  23. There may be more than one of him.
    Static
  24. His grave stone says he was born in 1781. It also says he will die later this month...
    Static
  25. But don't worry, he will rise again.
    Static
    I just discovered this. Holy shit.
  26. All his dreams come true.
    Static
  27. Static
  28. Static
  29. He is an actual angel.
    Static
  30. Jack McBrayer himself is also immortal.
    Local
  31. Case closed.
    Giphy