- "So what are we talking -- Freddie Krueger here?"
- ―John Sheppard
The boogie man (also spelled boogeyman, boogyman, bogyman, boogey monster) is a legendary monster. The bogeyman has no specific appearance and conceptions of the monster can vary drastically. It simply has no set appearance in the mind of a child, but is just an amorphous embodiment of terror. Dr. Rodney McKay referred to an entity that appeared to scare people in their dreams as a boogie man. (SGA: "Doppelganger")