There are many villains in the horror genre that have been very hard to kill, and some of them have never been killed and might never die.
Leatherface - The Texas Chainsaw Massacre franchise Although he’s human, Leatherface is surprisingly strong
TheFunInfo.Com
The Entity - It Follows The Entity doesn’t seem to have any weaknesses
TheFunInfo.Com
From children of the Avengers to intergalactic royalty, the original Young Avengers boasted a powerful and impressive line-up.
The Creeper - Jeepers Creepers The Creeper’s unique abilities make it immortal
TheFunInfo.Com
It - IT It is an inter-dimensional shapeshifting entity
TheFunInfo.Com
Chucky - Child’s Play franchise Chucky has been burned, mutilated, and more
TheFunInfo.Com
Michael Myers - Halloween franchise Michael Myers was supernatural at some point
TheFunInfo.Com
Jason Voorhees - Friday the 13th franchise Jason Voorhees is basically a zombie
TheFunInfo.Com