Stephen King's
In both the original novel and made-for-television adaptation, Pennywise is weakened using silver bullets melted down from earrings. While they aren't strong enough to kill him, they do weaken him enough to retreat, allowing the Losers Club an opportunity to regroup and plan their next attack.
In both the book and the films, It is an ancient alien creature, older than civilization, and in King's novel, older than our universe. It feasts on the flesh of humans simply because our fears are easy to manifest and they make us taste better.
Referred to as 'IT', this creature takes the form of its victims' biggest fears as it feeds off their fear, but its preferred shape is that of Pennywise.
In their final battle, the Losers' Club was able to kill Pennywise by reducing him to a child-like form as they overcame their fears. In the moments before Pennywise died, his fear is reminiscent of Georgie's own, therefore closing the cyclical nature of Pennywise's murders.
The spider-clown shrinks as the Losers hurl taunts at It, until it's tiny and weak enough that they pluck out its heart and squash it into nothingness. In the end, they defeat Pennywise by, uh, making him feel really bad about himself.
Stephen King's IT introduced readers to a one-of-a-kind creature that can take any form, the most common one being Pennywise the Dancing Clown, and as menacing as it is, this creature has one big enemy it's truly scared of: Maturin, the turtle.
He's a demon and the general idea is if you are not scare, it will only be harder for Pennywise to kill you as he needs to bait you. He can kill you if he wants to anytime and doesn't care. Although, if you are not scared, he will either leave you be for a little while or just kill you in the instant .
In the novel, It is a shapeshifting monster who usually takes the form of Pennywise the Dancing Clown, originating in a void containing and surrounding the Universe—a place referred to in the novel as the "Macroverse".
Throughout the novel (and its adaptations), IT kills many, many people, mostly children as their fears are easier to represent (as explained in the novel, the fears of adults are more complex and abstract, making it more difficult for IT to take a specific shape), but it never got to the Losers (at least not when they ...
They reach the conclusion that Pennywise has all of the adults under some sort of spell that prohibits them from seeing him. The adults of Derry are shown to be villainous in their own right as well. The adults of Derry are shown to be true villains of the story in the same way as Pennywise.
It is a shape-shifting creature known as a Glamour, who is billions of years old. Although It lived on planet Earth for many years, It originated in a void/dimension outside the regions of space known as the Macroverse.
It is a horrific and malevolent cosmic entity who is billions of years old and preys on Derry's people, especially children, feeding on their fears and using the writhing bright orange lights that comprised his own life essence known as "Deadlights", a dangerous and eldritch form of energy (which is used as a dark ...
Bill learns that It can only be defeated during a battle of wills, and sees It's true form, the "Deadlights", before Bill defeats the monster with Maturin's help. After the battle, not knowing if they killed It or not, the Losers get lost in the sewers.
Though there are some IT characters just as scary as Pennywise, the film's main villain proves to be its deadliest, with a kill count that actually reaches into the tens of thousands. Reddit user u/angelholme estimates that Pennywise actually took the lives of between 12,117 and 18,011 people.
Also in the 2017 film, Georgie's death is changed. As well as having his right arm bitten off, Georgie is trying to crawl away but he was dragged into the sewers and devoured by Pennywise, with an unnamed older woman and her cat being the sole witnesses of the horrific scene, including before Georgie lost his arm.
In fact, the balloons are considered in the fan theory to not only represent the deadlights – but that they also carry the souls of all the children Pennywise has devoured.
For the boys in the Losers Club, that fear includes werewolves, mummies, lepers, evil paintings, and even giant birds. When we finally see Bev's fear, it is something a bit simpler and much more rational than any of the boys. The thing she fears most manifests as blood.
IT arrived on Earth through an event similar to an asteroid impact, landing in what would later become Derry, Maine. Once there, IT adopted its usual pattern of hibernation that lasted between 27 and 30 years, awakening to kill and eat and then going back to sleep.
The novel explains that IT landed on Earth during an asteroid impact and established itself under the land Derry would be later built on, and initially preyed on indigenous tribes. From that point of view, IT/Pennywise would be billions of years old, but his clown shape wouldn't be that old.
Bob Gray or Pennywise, but his true form is an ancient eldritch entity from another universe who landed in the town that would become Derry by way of an asteroid and first awoke in 1715.
The Losers Club is the main protagonistic faction of Stephen King's novel It. They are a group of seven children, with six boys (later men) and one girl (later a woman) and they have unhappy lives which unite them.
Although the phrase is represented differently in the book and the movies, it has the same meaning in both, as it's Pennywise's way of subtly telling its victims (mostly young children) that they will die. As mentioned above, IT lives in the sewers of Derry, and that's where it takes most of the bodies of its victims.