The Operator Symbol is a circle with an "X" drawn through it: Ⓧ. It has not been revealed what it represents or what its function is except that it is somehow connected to the Slender Man . It is referred to as the Operator Symbol because it first appeared in Marble Hornets, which involved The Operator NOT the Slender Man.
Since it was used in Marble Hornets, its popularity has led it to be synonymous with Slender Man by the online community, and is drawn by many members of the Slender Finders.
There are a number of theories surrounding the Operator Symbol's meaning and function.
- It may represent the Operator's face, because the Operator has no face.
- It may represent the Operator's eyes, as seen in Marble Hornets
- The symbol summons the Operator to wherever it is drawn.
- The symbol acts as a ward against the Operator to keep him away.
- The symbol acts as a warning sign against the Operator.
- The more the symbol is drawn, the more influence the Operator has in the area or on a person.
- The symbol is perceived to the Operator as a large eye, or observing device and he is drawn to it.
- The Operator symbol can also be a possible portal for the Operator.
- The symbol, wherever it's drawn, means that the Operator is near the area.
- The symbol may have no function itself but acts according to the beliefs of the person viewing it.
An encircled "X" can denote a variety of ideas in the real world. For instance, in data modeling, the encircled X denotes the exclusion principle between two populations. In mathematics, the circled X is a mathematics operator meaning "circled times," and describes the tensor product of two vectors. Another version exists as a circle with a superimposed X, and is used to describe the three-dimensional directionality of an arrow. Other versions of this symbol include a circumflex accent, and within a double circle. Non-mathematically, the circled X, or heavy circled satire, denotes the location of a police station on Japanese maps.
However, the circled X has also darker meanings. For instance, the symbol was marked on Ellis Island immigrants to denote insanity. Samuel Clemens, also known as , used the symbol (the escutcheon in his diction) in his notes to represent a skull and crossbones. The encircled 'X" is also similar to Cornelius Agrippa's Planetary Seal of Jupiter, based upon Kamea numerology of the Hebrew alphabet.
No substantial connection has been shown between any of these common encircled X symbols and the Operator symbol associated with Slenderman.