While it didn't make it into either the miniseries or movies, IT's Pennywise memorably transforms into the shark from Jaws in Stephen King's book. When it comes to screen adaptations of IT, there will always be a limit on what the titular shape-shifting monster can become.
Pennywise is only one of Its forms. In the film, we also see It become a mummy, Beverly's dad, Mike's burning parents, the creepy painting lady, a decapitated boy, a leper, and Georgie, and in the book, he takes many more forms, most famously, the classic Universal monsters.
The Spider, the true form of IT in the physical plain of existence. Throughout the novel, It is generally referred to as male. However, late in the novel, the characters come to realize that It is most likely female, due to its true form in the physical realm being that of a giant pregnant female spider.
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.
Weakened, IT runs away to tend its wounds and is chased by Bill, Richie, and Ben, who stays behind to destroy the eggs laid by IT. Bill then fights his way inside IT's body to get to its heart, crushing it and finally killing the creature.
It's weaknesses are courage and heart. For the sake of spoilers, I won't go too much into the Ritual of Chüd, but suffice it to say that if you want to defeat It, you've got to have the two traits listed above.
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.
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.
Pennywise's origins are briefly explored in both the book and It: Chapter Two, where it's revealed that he is a being that crash-landed on Earth from another dimension hundreds of years ago.
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.
Kersh is Pennywise's daughter.
The turtle is a force of benevolence and is guided by compassion, whereas IT represents chaos, evil, and fear. They are diametrically opposed. Because they are both interdimensional entities with equal powers, the turtle could kill IT if it wanted to, therefore it's understandable that IT is terrified of it.
Throughout Stephen King's It, Pennywise is referred to as a male, but author Stephen King pulled a fast one on readers in the It book ending by revealing the creature's true form was a pregnant spider, implying that it is, in fact, biologically female.
Immortality: Its earthly avatar has existed on Earth for thousands if not millions of years. Its true form has existed even longer in the Macroverse (a void outside of time and space that surrounds our own universe).
This is one of the most interesting Hollywood couplings we learned about in quite some time. Apparently, Pennywise and the Babadook are dating. In fact, they're in a long term committed relationship.
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.
Humiliated, Pennywise begins to shrink, transforming into an almost Benjamin Button–like, melted clown-baby.
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.
The Pennywise the clown origin story sees an ancient, evil being that is perhaps as old as the universe itself. In the novel, however, the entity IT/Pennywise has a real name — Bob Gray. Bob Gray isn't human, however, and shares the same origin as IT.
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 ...
Beverly "Bev" Marsh is a fictional character created by Stephen King and one of the main characters of his 1986 horror novel It.
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.
Alucard - Hellsing Ultimate. Considered the most destructive weapon in the Hellsing Corporation, Alucard is an omnipotent, immortal manifestation of Dracula. Since he cannot be killed, he would destroy Pennywise with this wide array of supernatural skills.
Film: At the house on Neibolt Street, the kids basically do a bunch of damage by impaling It with rods. It looks like they get these weapons from the rusty wrought-iron fence of the house itself. Down in the sewers, during their final encounter, it's much of the same.