First we have to clarify that Pennywise doesn't kill, he is basically an illusion, It kills. It kills children because they are safer to kill then adults. Children are relatively powerless and most people (outside of friends and family) soon forget about them.
According to It, when humans got scared, "all the chemicals of fear flooded the body and salted the meat". This is why he prefers to feast on children -- their fears are simple, pure, and powerful compared to the complex, pathological fears of adults. Basically, children are delicious.
IT's targets are mostly children, and while the book explains it's because their fears are simpler, there might be a deeper explanation. Stephen King's IT introduced readers to an evil shape shifting entity living underneath the fictional town of Derry, Maine.
If there is even a sliver of doubt, Pennywise can't kill and eat them. The children of the Losers' Club are singled out for their particularly vivid imaginations. The book mentions that if they had not banded together, Pennywise would have picked them off one by one.
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.
First we have to clarify that Pennywise doesn't kill, he is basically an illusion, It kills. It kills children because they are safer to kill then adults. Children are relatively powerless and most people (outside of friends and family) soon forget about them.
According to It, when humans got scared, "all the chemicals of fear flooded the body and salted the meat". This is why he prefers to feast on children -- their fears are simple, pure, and powerful compared to the complex, pathological fears of adults.
And if his victim believes him to be powerless, he will become powerless. And so the group figures out that their best bet is, essentially, to bully the bully: They mock Pennywise, telling him he isn't scary. Humiliated, Pennywise begins to shrink, transforming into an almost Benjamin Button–like, melted clown-baby.
However, despite all that, there's one thing IT doesn't feature, and that's Pennywise devouring a baby. King doesn't go quite that far, although babies aren't safe from violence in the book completely, thanks to Patrick Hockstetter.
 Skarsgård's appearance and performance were naturally creepy, but It director Andy Muschetti still wanted to ensure that he captured the genuinely fearful reactionsOpens in new tab of the film's young cast.
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 .
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.
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.
Image via Warner Bros. Finally, Pennywise is beaten into submission. He scurries away, utters the word "fear," and partially disintegrates before falling into the void. It's a powerful defeat of a powerful monster, and it's satisfaction enough were IT to remain a single film.
Almost certainly the most well-known evil clown (save for Batman¹s archnemesis, the Joker; more on him later), Pennywise is modeled after real-life serial killer John Wayne Gacy, aka Pogo the Clown, a.k.a. "The Clown Killer." Gacy was convicted of sexually assaulting and killing 33 boys in 1980; he posed as a clown ...
Throughout the book, It is generally referred to as male, usually appearing as Pennywise. The Losers come to believe It may be female after seeing it in the form of a monstrous giant spider that lays eggs.
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.
It was said on page 1361 that the Spider being both female and pregnant was a symbolic interperetation. Its not literal, but a representation of whatever equivalent but inconceivable reproductive capability It actually has. Pennywise didn't become pregnant.
The story follows the experiences of seven children as they are terrorized by an evil entity that exploits the fears of its victims to disguise itself while hunting its prey. "It" primarily appears in the form of Pennywise the Dancing Clown to attract its preferred prey of young children.
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.
Kersh is Pennywise's daughter. Or at least the daughter of the man who originally had Pennywise's face. Additionally, the trailer offers a first glimpse of Bill (James McAvoy), Ben (Jay Ryan), Richie (Bill Hader), Eddie (James Ransone), and Mike (Isaiah Mustafa) back together.
Thanos would absolutely decimate Pennywise. Thanos is a fearless, ruthless, cunning, Machiavellian nihilist. He only fears one thing, the rejection of the one entity that he loves, Death, or the Marvel embodiment of Death.