Under what pseudonym did Eric Knudsen create Slender Man?

Under what pseudonym did Eric Knudsen create Slender Man? Eric Knudsen created Slender Man under the pseudonym Victor Surge.

Knudsen introduced the character on June 10, 2009, in a Photoshop contest on the Something Awful forum. He submitted two black-and-white images showing groups of children and digitally added a very tall, thin figure in a black suit. Captions presented the fictional photographs as evidence connected with missing children, helping establish the character's eerie mythology.

Victor Surge is Knudsen's online alias, not another character in the Slender Man universe. The Operator, by contrast, is an alternate name used for the figure in the web series Marble Hornets. Victor Sage is a DC Comics character, and Zalgo is a separate internet-horror entity.

Other users quickly expanded the idea with new images, stories, and videos. That collaborative development helped Slender Man become a notable creepypasta: a fictional horror legend built and circulated online rather than originating in a traditional book, film, or folklore tradition.