The Big Boo in Mario games. He was terrifying in Super Mario World because he had this angry scowl on his face, like he was going to murder me in my sleep. It got to the point where I discovered the Star Road entrance in Vanilla Dome so I could avoid any more Ghost Houses.
But now, he’s just a bigger Boo with the same dopey smile, and there are many more invincibility stars in the Ghost Houses. Not much anymore, but the paranormal still scares me and I think I’m forming Chronophobia these days.