- Norns older than 9 hours may be immortal.
- Norns with 2 or more toxins in their body over 95 may be immortal.
- Norns that reached adult before they were 30 minutes old are probably fast-agers.
If any of these checks are matched then a "boing" sound will be heard and the Norn's name that is displayed above the NoK will have 1 or more extra letters added in front of it followed by a ! as follows:
- O = Old
- T = Toxins
- A = Aging"