Reactive Evolution

Summary
Reactive Evolution is the ability to, in response to threats and adverse situations, adapt to grow better capable of dealing with any given issue; this can mean growing to become more resistant to certain methods of attack and certain abilities, developing new powers to better defend one's self, or just becoming more powerful to become an even greater threat.

A combination of Adaptation and Reactive Power Level, rather than adapting to better utilize their resources or rather than just growing stronger, the user improves in any number of ways to become more successful, durable, and powerful whenever their respective limits are tested.

Users

 * Doomsday (DC Comics)
 * Berserker (Fate/stay night)
 * Ultimate Kars (JoJo's Bizarre Adventure)
 * Ryūko Matoi (Kill la Kill)
 * Darwin (Marvel Comics)
 * Garou (One-Punch Man)
 * Saints of Athena (Saint Seiya)
 * SCP-682 (SCP Foundation)