His feasting time lasts about 10 months. Then, he goes back to hibernating for 27 years until it is his time to feast again. The cycle continues until the Loser's Club defeated him for good the second time they fought him. WEAR A WATCH!
It slept for millions of years, then, when humans appeared in the area, It awoke and began a feeding cycle lasting about a year, feeding on people's fears and frequently assuming the shape of whatever its prey feared the most. After feeding, It would resume hibernation for approximately 30 years before reappearing.
IT thrives on chaos; an exact 27-year pattern is way too predictable for a being of pure evil. Rather, IT wakes up roughly every three decades, and stays away for a different period of time.
"But, as we all know the mythology is very rich, and in Stephen King's book Pennywise has been around for a million years, he's been in contact with humans for at least five hundred years, and he comes back every 27 years.
Twenty-seven years after their first showdown with the murderous clown, the now-grown members of the Losers' Club converged on Derry to defeat Pennywise forever. 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.
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.
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.
Muschietti appears to be implying Pennywise was a human familiar who It corrupted and then enjoyed so much It incorporated his shape into its file cabinet of monsters.
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.
In the novel, It's origins are nebulous. He took the form of a clown most frequently, Mr. 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.
So basically, in the book, Bill heeds the advice of the gigantic, wise turtle god, completes the Ritual of Chüd, and defeats It using the tongue twister that's meant to help his stutter: "He thrusts his fists against the post, but still insists he sees the ghost." And don't even get us started on what happens the ...
That is, when Pennywise morphs into a werewolf, he is subject to the same weaknesses as a werewolf, including silver slugs. In both the original novel and made-for-television adaptation, Pennywise is weakened using silver bullets melted down from earrings.
Stephen King's IT featured an evil entity that can take any shape and feeds off fear, but even this creature has fears, and it's scared of The Turtle.
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.
Throughout the summer and their trials against Pennywise and the school bullies, the Losers realize that none of the adults in Derry can actually see Pennywise or the horrors he is committing against the children of Derry.
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 disguises itself as many frightening things in the movie. Pennywise can morph his mouth into a giant gaping mouth with layers of sharp teeth which he uses it mangle and eat his victims. This is all done with CGI.
Georgie's Arm ('It')
After a creepy conversation with Pennywise, the killer clown chomps on Georgie's arm, leaving the boy to drag himself to safety as blood pours into the raindrops on the street before he's pulled into the drain by Pennywise, never to be seen again.
A god of destruction, not just of our world, but of multiple worlds and even multiple universes. It originated in a vast cosmic void between worlds that has been called, at times, the Macroverse, and in King's Dark Tower series, the Todash Darkness, in a space It refers to only as the Deadlights.
The form of a female spider seems to be It's true physical form on Earth (or at least that is the closest thing the human mind can comprehend), living deep below the fictional town of Derry, Maine. It can morph into any other human animal, nonhuman animal, or object (including combinations thereof).
Humiliated, Pennywise begins to shrink, transforming into an almost Benjamin Button–like, melted clown-baby.
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.
If you are talking about the science when Georgie dies, Pennywise was thinking about his first meal in 27 years, and in Pennywise's words, fear in a kid is like “salting the meat.” So, when Georgie was laughing, Pennywise knew Georgie was not scared so he stopped laughing to make sure he was still fearful.
Kersh is Pennywise's daughter.