Nigh Invulnerable has these relationships to other tropes:

parents kids shares a parent with:
Pulling Themselves Together
parent child
ImmortalityAge Without Youth
''Nigh Invulnerability
''Body Surf
''Fighting A Shadow
''Healing Factor
''From A Single Cell
''The Undead
''Body Backup Drive
''Life Drinker
''Complete Immortality
''Immortality Inducer
''Exposition Of Immortality
''Living Forever Is Awesome
You'll need to Get Known if you want to add or modify these relationships.