The Ink Demon, also known as Ink Bendy or simply Bendy, is the titular main antagonist of the Bendy franchise. He is a failed attempt, defective experiment at creating the Joey Drew Studios's popular mascot Bendy in real life using the Ink Machine, a defect among several other physical cartoon characters due to lacking a soul. Being the current ruler of the Cycle, the Ink Demon is the biggest threat to the residents of the ink world, constantly pursuing and attempting to kill anyone unlucky enough to be in his proximity. He is the main antagonist of Bendy and the Ink Machine and Boris and the Dark Survival as well as the tie-in novels Dreams Come to Life and The Lost Ones, and the secondary antagonist of Fade to Black and Bendy and the Dark Revival.In his original incarnation in Bendy and the Ink Machine and Boris and the Dark Survival, the Ink Demon is a tall, malformed figure with skin made of black ink. His head resembles that of the original Bendy, but the top of his head appears melted, obscuring his eyes. His horns are curved to bear a crescent, and are able to be articulated similarly to a cat's ears. His toothy grin, matching his original cartoon design, appears sketch-like and vibrates. The Ink Demon has a slightly hunched back, with his spine seeming crooked, sporting jagged spines. His left arm is slightly longer than his right, which looks thinner and less human. On his left hand, he wears a cartoony glove with four fingers, (reminiscent of the original Bendy's gloves), while his right hand is much smaller and human-like with five fingers. The Ink Demon's feet are also mismatched. His right foot faintly resembles that of a human, while his left foot is a stump, due to someone cutting it off, giving him his limp. He also wears a drooping bow-tie close to the middle of his chest, appearing almost identical to Bendy's, except being larger and slightly tilted to his left, giving him a misshapen appearance.The Ink Demon is a failed attempt to create Bendy as a physical, living being; he has no soul and, as such, has no proper emotions. After being locked up on Joey Drew's orders for being a failure it is possible that the isolation caused him to develop his murderous tendencies as he was not hostile before he was forced into a locked room full of medical supplies. In Bendy and the Ink Machine, the Ink Demon is capable of speech through telepathy as Sammy Lawrence proves that he has heard the Ink Demon’s voice in his head many times. The Ink Demon seems to have a mind of his own, able to taunt Henry in the vents in Bendy and the Ink Machine: Chapter 4 - Colossal Wonders. In Chapter 3: Rise and Fall, he is hinted to be fairly egotistical as he heavily dislikes when the Bendy cutouts throughout the studio are destroyed, according to Alice Angel. Bendy also seems to dislike anyone he comes across, possibly due to his earlier treatment in the hands of Joey. In Bendy and the Dark Revival, the Ink Demon now gains a proper personality and voice, showcasing him as a sadistic demon who shows no remorse for his atrocities. He actively desires to kill Audrey and ensure the Cycle's continued existence, which includes himself as its ruler. However, he hypocritically despises Wilson for his godly aspirations, even warning Audrey not to trust him as a disembodied voice. When he confronts Audrey after he saves her from Wilson's failed creation, the Ink Demon calls the girl a monster much like him, showing that he is fully aware of his nature and embraces it; projecting his own existence onto Audrey. He shows open distaste for Joey Drew and declares that the failures of his life will end with his death. Before Audrey breaks the Cycle's extension, the Ink Demon tells her that she can do nothing to truly end the Cycle for good, showing that he is somewhat nihilistic.

Ink Demon:Walking around the hallway slowly