In The Mind Of: Pennywise The Dancing Clown/IT (SPOILERS)

Time to Float...

For every 27 years, something comes to Derry. Something strange, something dark, something...evil. It can't be explained, and there's no way to prove what it truly looks like. It doesn't even have a real name, simply being known as IT. This creature can take many forms, but its preferred host is that of a clown known simply as Pennywise. Under this guise, IT begins to actively seek out children (its favorite food source) to frighten and feed upon, which says a lot about its character. First, that it is a sentient being who revels in causing as much pain and suffering as it can, and secondly, that it ironically is a ginormous coward that can only function when its victims are afraid. If they fight back, IT can be destroyed, which almost is the case when a young group of children known as the Losers' Club decide to fight back. Narrowly escaping death, IT goes back into hibernation and decides to seek revenge on the Losers once it awakens, leaving several bodies in its wake (including that of fellow Loser Eddie Kaspbrak) before the combined might of the Losers in their adult prime come together to destroy IT for good. 

Pennywise/IT is for me one of, if the most, evil characters to ever grace the realm of fiction. It is as nightmarish as it is jovial, hilarious as it is sadistic. There is no shortage of horrors it can conjure up, and yet you'll find yourself laughing your head off at certain times because it is, at the end of the day, a clown after all.