Slenderman

Summary
Slenderman, often referred to as Slender, The Slenderman, The Tall Man, The Operator, etc, is a mythical creature created by Eric Knudsen (AKA Victor Surge) to help support the Creepypasta community; since then it has gained world wide renown and has been the subject of countless photo edits, dozens of games, several movies, and even documentaries on the subject of his existence (notably based on similar myths aged at around 11,000 years old).

Due to the varying nature of his stats, he will be included with several forms.

Powers and Stats
Tier: At least 6-A | At least High 3-A

Name: The Slenderman, The Operator, Slender, Tall Man, The Thin Man, The White Knight, The White King, The Pale One, Der Schlanker Mann, Slendy, Master, Fear Dubh, Schlankwald

Origin: Creepypasta

Gender: Genderless, appears as a male

Age: At least 11,000 years based on human mythology on him.

Classification: Paranormal Entity | Higher-Dimensional Entity

Powers and Abilities: Superhuman Physical Characteristics, Flight and Levitation, Teleportation, Mind Manipulation (Proximity to the Slender Man is often said to trigger a "Slender sickness"; a rapid onset of paranoia, nightmares and delusions, capable of turning people into his servants/“proxies”), Limited Technological Manipulation (Distorts any technology within its proximity),  Body Control (Able to stretch its limbs and torso), Size Manipulation, Fear Aura, Possession/Mind Control, Invisibility, Radiation Manipulation (Specifically Sigma Radiation), Shapeshifting (Capable of disguising itself to match its surroundings), Able to alter its voice to mimic another’s, Fire Manipulation, Weather Manipulation, possible Time Manipulation (In The Arrival, as Lauren gets closer to Kate's house, the time of day seems to rapidly go darker, eventually turning to night as the player arrives at the house), Telepathy, Memory Manipulation, Immortality (Types 1 and 8; will always reform as long as a memory of him exists), Intangibility, Invulnerable, Reality Manipulation, ETC.

Attack Potency: At least Multi-Continent Level (Is vastly superior Laughing Jack who is stated to be more powerful than the combined efforts of all Nuclear Weapons) | At least High Universe level (Created and governs the Slenderman Dimension which is a 4th Dimensional realm that exists beyond our material universe and is apparently infinite)

Speed: At least Supersonic+ (Can dodge and react to gunfire, Should be superior to Jeff The Killer and Ticci Toby) | Possibly Omnipresent (theorized to be everywhere at once until locked into a specific location via sight), otherwise Immeasurable (seems to teleport around via Slender Walking through the 4th dimensional space around us)

Lifting Strength: Unkown 

Striking Strength: Class NJ (Is vastly superior to Laughing Jack who is stated to have more power than every nuclear weapon combined) | High Universal (Can create andgivern entire 4th Dimensional realms with infinite sizes)

Durability: Multi-Continent Level (Is vastly superior to Laughing Jack who could survive every nuclear weapon being thrown at him) |, possibly High Universe level (Has never been seen to actually get hurt, assume that durability is relative to tier; known to ignore gunfire but possibly due to intangibility and Invulnerability)

Stamina: Likely limitless

Range: Extended melee physically, several meters with tentacles, unknown with manipulation abilities | High Universal (Is the creator If a The Slender Dimension which is a higher-Dimensional realm beyond the material universe)

Standard Equipment: None

Intelligence: Unknown, skilled manipulator of the human psychology, great at causing fear

Weaknesses: Similar to Pennywise, if every human being on Earth fails to believe in him he cannot return to life and is rendered weak; enjoys torture rather than instant death and allows enemies to openly defy him, although puts a stop to them if he perceives obvious threats