Summary
Regeneration is an ability by which a particular character can heal wounds at an accelerated rate, which would be impossible for a normal human. Regeneration has different levels which ranges from recovering from normal wound ro even regenerating lost limbs or organs to much further such as regenerating from decapitation or regenerate from a single molecule/atom
Types
Low: Able to heal faster from normal wounds than a normal human
- Examples: Yulian (Red Storm), Kid Naruto (Naruto)
Mid-Low: Able to heal wounds that would normally leave large scars.
- Examples: Obito Uchiha (Naruto)
High-Low: Able to regenerate some severed body parts like fingers, arms, legs.
- Examples: Ulquiorra Cifer (Bleach)
Low-Mid: Able to regenerate limbs/fatal wounds. Still die from decapitation.
- Examples: Sung Jin-Woo (Solo Leveling), Ichigo Kurosaki (Bleach)
Mid: Able to regenerate from decapitation.
- Examples: Piccolo and other Namekians (Dragon Ball), Sakura Matou (Fate/Stay Night)
High-Mid: Able to regenerate from being blown into pieces.
- Examples: Dio Brando (JoJo's Bizarre Adventure), Ryuko Matoi (Kill La Kill)
Low-High: Able to regenerate from a puddle/drop of blood, or a small piece of your body.
- Examples: Cell (Dragon Ball), Homunculi (Fullmetal Alchemist), Alucard (Hellsing), Ban (Nanatsu no Taizai)
Mid-High: Able to regenerate from being vaporized/dust.
- Examples: Sōsuke Aizen (Bleach), Buu (Dragon Ball), Madara Uchiha and other Edoes (Naruto)
High: Able to regenerate from a single molecule/atom/particle.
Low-Godly: Able to regenerate as long as your soul and/or disembodied consciousness exists or to regenerate from other realms.
- Examples: Dark Schneider and other Eternal Atom users (Bastard!!)
Mid-Godly: Able to regenerate from nothing, even if the body, mind, and soul got completely erased at the same time.
- Examples: Lambda Usagi
High-Godly: Able to regenerate from being erased to degrees that remove aspects that are fundamental for one's existence, those being concepts, information (Type 1), plot, history, etc.
- Examples: Beatrice, Ange Ushiromiya, Battler Ushiromiya, etc. from Umineko no Naku Koro ni
Note: For High-Godly it should be specified the aspect that was erased from the character, an example being "High-Godly (Plot: Regenerated after being erased on a narrative level)".