Female Cenobite

First appearance: Hellraiser (1987)

Even though everyone seems to love Pinhead, Female Cenobite actually seems to be good at the job the cenobites are assigned. Pinhead always seems to let Kristie get away with opening the box.

Clifford

First appearance: Clifford (1994)

All Clifford wants is to go to Dinosaur World, woe be unto those who get in his way...

thoroughly under rated / under seen movie.

Greta

First appearance: Gremlins 2: A New Batch (1990)

The sequel to Gremlins. Billy and Kate have problems with Gremlins in New York city this time!

Cheddar Goblin

First appearance: Mandy (2018)

A lumberjack and his girlfriend run into some trouble with a folk singing cult leader and a weird gang of LSD mutated motorcycle enthusiasts. things unfold the way you'd expect... or does it?

Cujo

First appearance: Cujo (1983)

A heart warming tale of a dog that really wants to hang out with it's owner and her son.
Kinda like Ol' Yeller but with more scares.

Trantor

First appearance: Ernest Scared Stupid (1991)

A Troll is turning the townsfolk into wooden statues! It's up to Ernest Powertools Worrell and an eccentric local artist who survived the trolls first attack to stop him!

Harry Stadling

First Appearance: Cristmas Evil (1980)

As a child, Harry Stadling, sees his mom being groped by Santa Claus scarring him for life and for some reason making him obsessed with Christmas. One night when he's an adult he decides to be the REAL Santa and goes out rewarding good little kids and killing and mutilating those who he believes are naughty.

Leech Woman

First appearance: Puppet Master (1989)

A bunch of psychics investigate an old hotel and are menaced by living puppets. Who created the puppets? Why are they killing the Psychics?
One of the longest running horror franchises.

Hoodie

First appearance: Impossible Horror (2017)

Two women embark on a quest to discover the source of a mysterious scream heard on a nightly basis. Their adventure leads to madness, art and most importantly ... HORROR!
The latest feature from the people who brought you TEDDY BOMB!

Rifleman

First appearance: Downrange (2017)
A group of teens run afoul of a masked maniac. Unlike normal teen exterminating masked manics, this one doesn't use cutlery or power tools or forestry equipment, he's got a rifle.
Weird variation on a slasher flick. I really liked the ending.

Joseph

First appearance: The Crescent (2017)

A woman and her child move into her mother's house to deal with the grief of losing her husband and to marble paper. Unfortunately for her there's some weird stuff going on around the beach.
A horror flick in the vein of EYES OF FIRE and MESSIAH OF EVIL.

Mrs. and Mr. Ryan

First appearance: Mom and Dad (2017)

For some reason parents have an uncontrollable urge to kill their offspring. Not ALL kids, just their own. Could it be some kind of attack on the country or the entire species! It doesn't matter, your parents will kill you.

Jötunn shape shifter

First appearance: The Ritual (2017)

Four friends go on a hiking trip to morn the death of one of their other friends. The learn that it's not a good idea to take shortcuts.
Based on a novel by Adam Nevill

Pennywise The Dancing Clown

First appearance: 2017

A bunch of kids run afoul of some kind of horrible shapeshifting monster that lives in the sewer beneath there home town. The monster takes the form of what it's victims fear most favouring the look of a creepy clown, and surfaces every 27 years to feed.
Movie based on the Stephen King novel but shifts the story 27 years into the future.

Pennywise The Dancing Clown

First appearance: 1990

A bunch of kids run afoul of a giant spider from outer space (possibly from another dimension) who wakes up every 27 years to feed. The space monster takes on the forms of things it's victims are scared of. This doesn't stop the kids from defeating the spider monster.
Unfortunately for the kids they didn't kill the space monster so IT comes back 27 years later to annoy the now adults to death.
90s TV Miniseries Based on a Stephen King novel and for some reason very popular even though the monster is more irritating than frightening.

Jason Voorhees (finally the last one... until the next remake)

First appearance: Friday the 13th (2009)
Hey remember those other 10 movies that Jason was running around killing kids? Yeah, well, None of that happened because we've decided to reboot the series. This one almost plays like a sequel to the original 1980 movie. Not the worst of the movies to feature Jason Voorhees but also not quite the best. One of the few Friday the 13 movies where some of the action actually takes place at Camp Crystal Lake. Might finally be the last Friday the 13th movie.

Captain Spaulding

First appearance: The House of 1000 Corpses (2003)

Four jerks go on a road trip to find the truth about the mythical serial killer "Dr. Satan." What they find is the horrifying Firefly clan. things don't go well when they offend the Fireflys by not accepting their hospitality. Moral of the story, don't be a jerk.

The Collector

First appearance: The Collector (2009)

Arkin just wants to turn his life around and quit being a a cat burglar. Unfortunately his wife owes some horrible people a lot of money. These horrible people force Arkin to pull one more heist on the people he's currently employed by. Unfortunately for Arkin there's someone else interested in the family...

Jacob Goodnight

First appearance: See No Evil (2006)

Jacob Goodnight enjoys pulling out eyes.  An unfortunate group of delinquents attempting to turn his stomping ground into a homeless shelter find this out the hard way.

This appearance: See No Evil 2 (2014)

Turns out you just can't keep a Goodnight down. Jacob gets up to his old shenanigans with a new look, this time at an undertaker's birthday party at the city morgue!

Beach Ball with Claws

First appearance: Dark Star (1974)

Follow the mission of the crew of the planetary demolition space ship Dark Star.
John Carpenter's first feature film written by Dan O'Bannon (who also stars).
If it wasn't for this movie we wouldn't have Alien, Red Dwarf, or that cool stretchy star field thing we see in Star Wars when they activate their Hyper Drives.