The power to gain traits that have been lost or disappeared years ago. Variation of Evolution.
- Evolutionary Throwback
- Primal Form/Reversion
- Regressive Atavism/Evolution
The user reverts into primal form, becoming an evolutionary throwback with traits which have disappeared generations before.
- Berserker Physiology
- Feral Mind
- Natural Weaponry
- Physical Augmentation
- Primal Imprint
- Regenerative Healing Factor
- Users may have a limited intellect.
- Users may not have control of their primitive instinct and urges.
- Users' physiology may be unstable.
- Turok-Han (Buffy the Vampire Slayer)
- Antarcticians (Centaur no Nayami)
- Killer Croc (DC Comics)
- Cheaters (Deathtopia)
- Yusuke Urameshi (Yu Yu Hakusho)
- Ancient Zoan Type Devil-Fruit Users (One Piece)
- Richard Lazarus (Doctor Who)
- Dr. Henry Mccoy (Marvel Comics)
- Andrea Talbott (The She Creature)
- Tony Rivers (I Was A Teenage Werewolf)
- Primal Kyogre (Pokémon)
- Primal Groudon (Pokémon)
- Orb and Decka's Species (Ben 10: Alien Force)