The Regenerative category is one of the two that aren't recognized in the US enemy chart and NP strategy guide. The common factor among them is that they all regenerate HP at (I think) 10% per round, but only on the WSC/PSX versions.
The thing about the Regenerative category is that the Flame Sword and Excalibur have a greater effect on them. This of course only applies to the WSC/PS versions.
