While regeneration is a relatively common superhuman ability in fiction, there is one variant that is relatively frightening. The variant in question is when the user is injured and regenerates then they are stronger than they were before and their strength continues to increase the more they’re injured. A prime example is Doomsday from DC Comics because even when Superman defeated him in a draw, Doomsday came back and could not be beaten the same way twice. Because one of the new characters in my graphic novel series has a warrior mindset, I am thinking of giving him this ability and his ability to grow stronger after each battle will make him an irreplaceable ally to the team. The scary part is that even when one of his arms has been severed, he will keep fighting, laughing manically as his maimed limb regenerates. Overall, it is a very scary concept!