Immortal / long lived characters - how might they live undetected in the real world?

[Idris2002]

The Catholic priesthood might have been a good option for immortals in previous generations - they believe in weird supernatural shit, they give people new names, the Vatican can issue passports, and they're experts in covering things up.

Sovereign Military Order of Malta

 

[samk]

If the spooks found your real identity would they hire you as a secret agent or entomb you in concrete?

 

[JuanTwoThree]

There's obviously a difference between extreme longevity that could be stopped by a fatal accident, or drowning, or anything that would kill anybody else, and bullet-proof immortality. Presumably one of the things that become important in the first case is staying alive. In the second case you know you will. The first would make you some kind of scientific anomaly. The second would be magic.