The Slender Man is a character in Web and Friends. He originates from the Slender Man mythos and is the main antagonist in "The Haunt".
Slender Man generally appears (in modern times) as a tall man in a black or grey suit, red or black tie, and white shirt, with no eyes, mouth, or clearly defined facial features. It has no hair, and generally has normal-looking bare hands. Slenderman typically is depicted in imagery and literature as between 6 and 15 feet tall, depending on the situation, and in video as around 6-7 feet tall.
- He is stalking Webb, Sekai, Seth, Fiora, Castani, Squishy, Josh and Munchkin due to the journal they found belonging to his now controlled proxy, Blindside (Bella).
- He is often referred to as the Operator, the Thin Man, the Tall Man, Slender and informally, Slenderman.
- In The Haunt, Jeff the Killer seems to be his ally, as Jeff kidnapped Giggles and brought her to the Slender Man.
- His motives in the Haunt remain unknown at the time.
- Bella appears to be his only proxy, however, more may appear.