Immortality

Immortality is a term used to categorize beings that are capable of living for a extremely long time. For the races with immortality, check out Races.

Types of Immortality
Immortality is split between three different types of immortality. Natural, Mutational, and Special. Note that immortality simply means one cannot die from aging. They can still be killed. Although they can't die of aging, it is not uncommon for people to go crazy after living long enough, and if they don't they change in personality. Even the World Enders have changed from living so long.

Natural Immortality
Natural immortality is when it's a race's normal trait. For example, the Great Race have natural immortality, and do not age at all. This is applicable to most alien races, including the Great Races, and both creatures of heaven and hell. Typically natural immortality doesn't activate until the user reaches their peak. Until then, their aging proceeds like normal (NOTE that different races age faster or slower than humans. For example, Demons age a bit slower than humans before they reach their peak.)

Mutational Immortality
Mutational immortality is when there is a mutation in one's aura, causing their aging to slow the older they get, before eventually stopping. None are born with immediate mutational immortality. Being the offspring of two immortals, or even one, just increases the chance of the mutation happening. This is by far the most common immortality in the world.

Special Immortality
Special immortality is when there is a very different explanation for one's immortality. For example Executor's kyokin genkin stops his aging when he's at peak condition, and Lyn ate a special golden fruit that granted him his immortality. It's typically used with immortalities that are obtained through magic, tools, kyokin genkins, or other reasons that either don't fit in the other two categories or cannot be described.