Reattaches severed body parts

Kappa

a captured Kappa's arm can be reattached with the right medicine

Walutahanga

Walutahanga is repeatedly cut apart or killed by relatives who fear or resent her serpent form, and each time restores herself

Lambton Worm

The Worm's hide was said to be so tough that conventional weapons could not harm it, and it possessed the ability to reattach severed parts of its body.

Manananggal

finding and destroying the lower half of the Manananggal's body while it hunts will prevent it from reattaching, thus killing the monster