House on the Rock can be scary as hell sometimes

Soviet anti-alcoholism poster

Screenshot of a creepy Nintendo commercial. Typically believed to be from Australia, but it's difficult to confirm this.

Remember these guys?

Stare...

The Stanford Tree, Stanford University's unofficial mascot, has gone through many incarnations over the years, some scarier than others.

Mac Tonight, aka Moon Man. Some serious Uncanny Valley goin' on with this guy.

The first version of the Hamburglar.

An old Hamburglar swing set.

Store mannequins.

An early version of what would eventually become the Cookie Monster.

Screencap of a segment from Sesame Street

Screencap of a segment from Sesame Street

Screencap of a segment from Sesame Street

Bert and Ernie cosplay of scary proportions

Another very early cookie monster

The original Ronald McDonald

Sometimes, you can find nightmare fuel in unexpected places.

From Pokemon Sunday

In spite of what people will tell you, the Tails Doll was intended to be cute, not scary.