Considered the most powerful warrior in the multiverse, Son Goku would handily defeat Pennywise in a tussle.
Pennywise. His power makes him more superior to eleven.
Ghost Rider. He would have no fear of Penny wise and has the tools to destroy him. Pennywise thrives on fear and would have no weapon against Ghost Rider.
Warner Bros. Pennywise's signature power is the ability to shift into any shape the mind can imagine. It is actually an entity from another world with a true form that is too complex for the human mind, a spider being the closest option.
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.
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.
It Is Actually An Ancient Cosmic Force Of Destruction
It is the real monster behind the monster. If you want to get technical, It is an alien, but It's origin goes well beyond that. It is actually an ancient cosmic deity. A god of destruction, not just of our world, but of multiple worlds and even multiple universes.
Batman would beat each of them. He could easily outsmart Jigsaw, his training in stealth, martial arts, and his body armor would allow him to survive Jason. Pennywise uses fear. Batman easily conquers his fears as seen with Scarecrow.
Son Goku - Dragon Ball Super
Considered the most powerful warrior in the multiverse, Son Goku would handily defeat Pennywise in a tussle.
In Ghost Riders: Heavens on Fire #6, Johnny Blaze states that since God created the Ghost Riders, only God can destroy them.
As powerful as Cosmic Ghost Rider is, Immortal Hulk would destroy him. Castle couldn't do anything that would actually kill him, which would give Immortal Hulk time to destroy his foe.
Imaginably, Ghost Rider's mystical abilities, the Eldritch Powers, would render all of Shazam's impressive powers useless.
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.
If this were to happen, you better start running, because without a doubt, Pennywise would win in a fight against any other evil character, let alone a human. Pack it up Michael Myers. For starters, Pennywise is supernatural. His biggest strength is his ability to read and manipulate minds.
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.
Down in the sewers, during their final encounter, it's much of the same. Mike brings the gun he uses to kill livestock, and the rest of the Losers come prepared with more rods. Beverly deals the final blow by putting one straight down It's throat.
Deadpool would take this one rather easily. Pennywise is a very powerful demon. He can feel your fears and actually feeds on them.
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).
It feasts on the flesh of humans simply because our fears are easy to manifest and they make us taste better. According to It, when humans got scared, "all the chemicals of fear flooded the body and salted the meat".
Godzilla came back and beat Kong, which makes sense given Kong's wounds and Godzilla's nigh-invincibility, as well as his ability to absorb radiation to recharge himself. But rather than kill him like he did the MUTOs and Ghidorah, Godzilla initially left Kong to succumb to his wounds.
There was a human Pennywise the Dancing Clown, but IT just takes his form. In the movie canon, Pennywise the Dancing Clown was a real person whose image IT decided was a terrifying enough basis for his child-scaring campaign.
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.
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.