Valak

First appearance: The Conjuring 2 (2016)

Ed and Lorraine Warren investigate the Enfield Poltergeist! But before that they investigated the Amityville House and Lorraine met a creepy ghost nun. Who is this nun? What does she have against the Warrens? Great follow up to the Conjuring. 

The Driller Killer

First appearance: Slumber Party Massacre 2 (19987)

The little sister of the girl from the first Slumber Party Massacre has grown up and is suffering nightmares due to the events from the first movie decides to take the members of her all female rock band and their boyfriends to a condo for a weekend of fun and Rock n' Roll...

Unfortunately a Rockabilly weird with a very dangerous guitar arrives to screw up everyone's plans (literally)

But is he real?

Sadako

First appearance: Ringu (1998)

A weird psychic girl gets her revenge through a cursed video tape. Watching the tape means you'll die in seven days. Why does she want to kill you? It has something to do with being thrown in a well where she died. Certain aspects of the plot are similar to the amaing "The Changling" (1980).

Remade in the U.S. into a stylish yet boring movie.