Immortality

Immortality is the ability to possess a possibly infinite lifespan.

Description
Users possess an infinite life span, and can shrug off virtually any kind of physical damage. Some users are the defensive type, simply preventing such damage from appearing (invulnerability/protection), while others are the regenerative type, surviving and quickly recovering from anything you throw at them.

Immortals are protected from a natural death, but can still be killed or vanquished through unnatural means. These beings are often immune to aging or at least age at a much slower rate than humans.

Limitations

 * Cannot overcome the End of Time, unless the form of immortality is an absolute type, hence why just like Regenerative Healing Factor, it is unclear how long it would last.
 * May be erased from history via the effects of time-manipulating powers, killing the immortals in question before they become immortal.
 * Nonexistence may wipe the user out of existence, as opposed to simply killing them biologically.
 * May have certain weaknesses that are lethal (i.e. decapitation, disintegration, poison).
 * May be killable by certain specific way, item or people.
 * May forget events that happened long ago.
 * Some immortals could be infertile, or they're incapable of passing this ability to their descendents.
 * Can be sealed in an empty dimension with no chance to escape.

Levels of Immortality

 * -|Semi-Immortality=
 * Cannot age, thus preventing death via senescence.
 * Remains vulnerable to mortal wounds, diseases, and foreign substances.
 * Mental damage may still occur.
 * -|Reliant Immortality=
 * User acquires immortality by anchoring their life to a certain object, source, concept, etc.
 * Destruction of anchor ends the user's immortality.
 * The physical body remains mortal, only the soul is earthbound.
 * May require continuous intake of source or maintenance of object to remain immortal.
 * -|Immortality=
 * Cannot age once reaching a certain point.
 * Immune to diseases, toxins and drugs.
 * Wounds, even crippling or fatal ones, heal near instantly.
 * Time-manipulating powers can erase the user's existence, as opposed to biologically killing them.
 * May apply only to biological immortality, as the mind and/or soul may remain mortal.
 * Immortality power may be removed, rendering the user mortal once again.
 * -|Unfettered Body=
 * Cannot age once reaching a certain point.
 * Body is completely immune to physical damage, toxins and pathogens.
 * Soul and mind may remain vulnerable.
 * Time-manipulating powers can erase the user's existence, as opposed to biologically killing them.
 * -|Absolute Immortality=
 * Cannot age.
 * Immune to all diseases, toxins and drugs.
 * All wounds and injuries heal instantly.
 * Immortality applies to not only the body, but mind and soul as well, rendering the user truly "absolute".
 * Power is absolute, so it can never be removed, nor can the user's existence from timelines.

Notable Immortals
Species • 4 Notable Individuals
 * Barbas