Believe it or not, I was once a child. See:
A perfectly normal human child.
But I had many fears as a child. When I was a kid I was terrified of them, but now that I'm in my 30's I can look back at them and ... I'm still terrified of them.
5. The Booger Man -
I got this one a little mixed up. I misheard people saying "Boogeyman" and I believed there was an actual creature made mostly out of boogers. I used to think I saw him hiding behind my tree in the backyard. I sorta thought how it worked was, if you have boogers, he wants them to add to his body. So, I used to take the boogers out of my nose and flush them down the toilet so he wouldn't break into my house and go through my wastebasket. Also, I feared he would murder me.
4. Todd -