It (miniseries)
The story revolves around an inter-dimensional predatory shapeshifter which has the ability to transform itself into its prey's worst fears, allowing it to explore the phobias of its victims. It mostly takes the form of a sadistic, wisecracking clown called Pennywise, in order to trick and murder children. The protagonists are The Lucky Seven,  or The Losers Club, a group of outcast children who discover Pennywise and vow to destroy him by any means necessary.