B.) 1.- assuming that you mean only in the first movie
2.- assuming you mean all BUT the first one
3.- His name is Pennywise and he's not actually a clown, he's actually a demon that preys on the souls of innocents (i.e. children)
4.- he wasn't a "doll that came to life" he was a serial killer that transferred his soul into a doll and wants a living human vessel.
5.- Jigsaw (John Kramer) only places people he feels undeserving of life into his traps, and in reality finds no joy in it, but rather believes he is making the world a better place. (i.e. saw 3, when he chides Amanda, calling her "nothing more than a serial killer, no better than the people he puts in his traps" for making her "games" unwinnable, thusly no lesson can be taught to the victims.)
please check your facts, but other then that gret potential, it just needs some polishing.