Meth

Meths, named after the long-lived biblical character of Methuselah, are individuals with extended lives granted to them by re-sleeving regularly. The individuals in question are usually the wealthiest citizens, such as Laurens Bancroft. Laurens was, at his introduction, the oldest living Meth at three-hundred-and-sixty years old. Other humans such as Takeshi Kovacs become Meths simply because certain wealthy individuals required their assistance.