Regen Hammer is a kind of rare ghost in Luigi's Mansion 3, it is a form of a Hammer (enemy). Regen Hammers only appear in the ScareScraper's ten floor mod, they have 400HP, a double of a Hammer's HP. They can restore HP like Regen Goobs.
Regen Hammer appears to be a form of Hammer, both kinds have rectangular body and two tails. Although they are similar, Regen Hammers are glowing pink instead of being red. They are defeated in the same way as Hammers.
When Regen Hammers appear, they will attack Luigi by punching. Luigi has to flash them and suck them up from behind, same as the way to defeat Hammers. Regen Hammers will restore their life if they are released of after being slammed.