Very Hungry Pikachu

The Darkness is a mysterious and nigh-unstoppable mass of glitchy pixelated darkness that assimilates and corrupts everything in its path. It is a glitchy, rampaging, flooding ink-like liquid blob of darkness with ear-piercing glitch noise’s that assimilates everything in its path and whose origin is unknown. All that is known about it is that it’s a mindless force that seemingly targets cartoons and turns all characters it assimilates into mindless agents that it uses to spread its influence. It corrupts fictional characters by assimilating them into becoming its zombified slaves who love and worship it as a benevolent deity, before proceeding to assimilate their entire world. It seeks to grow powerful enough to assimilate all of fiction itself and then escape into our real world by literally breaking The Fourth Wall (a cosmic barrier on the border of the fiction multiverse that separates fiction from reality) and consuming everything in its path. It is a large, glitchy, black pixelated mass that infects anyone who touches it to become a mindless husk. It then uses them to attack others in an attempt to infect them as well. The Darkness also invades other worlds and universes in its path of mindless destruction. The Darkness is indestructible. The Darkness can travel into other fictional worlds without being limited by the laws of that world. It is a glitchy, rampaging, flooding ink-like black liquid blob of darkness with ear-piercing glitch noises that assimilates everything in its path and whose origin is unknown. It’s a mindless force that seemingly targets cartoons and turns all characters it assimilates into mindless agents that it uses to spread its influence. The Darkness says, uses and does edgy things; such as using internet slang, 2016 memes, emojis, and hashtags, which implies that it has broken internet humor but twists it into morbid phrases. The Darkness primarily appears as a formless blob of ink-like, pixelated darkness covered and surrounded by a glitchy aura of multicolored pixels that move at a rapid speed. It is also occasionally has emojis and hashtags on its mass. It uses a smiley emoji as a "face". Its malformed minions often have the glitchy ink-like substance pouring out of their orifices and their bodies are pixelated at places. The victims also mutate, gaining bonus limbs etc. If someone becomes claimed by the Darkness, they become a part of it. Its malformed minions often have the glitchy ink-like substance pouring out of their orifices and their body below their midsection is simply a dark mass. The most distinct feature of the Darkness' slaves is that all sport eerie grins that are so wide they almost extend to the ground and they have the glitchy darkness pouring from their eyes and also possess stretched out and warped proportions, most prominently involving their jaws elongating widely. Whenever someone becomes assimilated by the Darkness, they still retain pieces of their original personality and behave a lot like they usually would in their own show, such as Finn the Human still carrying around his sword, Jake the Dog using his elastic body, Peter Griffin drinking alcohol and telling Meg to shut up etc. The biggest difference is that they are far more hostile towards uncorrupted people and are fanatically devoted to the Darkness, constantly shouting that it "saved" them and gave them a better existence. Given the fate of those who become the Darkness' puppets, it is possible that their every move or word is simply the Darkness manipulating their empty husks. Despite having caused nothing but misery and suffering to our beloved protagonists and its actions being treated with the upmost severity, the Darkness itself has a consistently quirky and comedic side to its demeanor and is, funnily enough, one of the only sources of humor within the horror-based apocalypse. One of the Darkness' quirks is its obsession with internet culture and its habit of using internet slang. The Darkness says and does edgy things; such as using internet slang, 2016 memes, emojis, and saying things like “#totallylitfam!🔥” Using Hashtags and also saying “that feeling when your w🌎rld ÉÑDŚ” which implies that it has broken internet humor but twists it into morbid phrases. It’s says things people say on the modern internet such as “#lit🔥" or "#fam💯”. The Darkness can corrupt seemingly anything in its path by simply touching a person or surface, causing the victim to be absorbed and assimilated into its dark mass, transforming them into its zombified slaves. It can corrupt from anything from characters to the fabric of an entire universe. The Darkness is seemingly indestructible. Whenever someone is assimilated by the Darkness their consciousness is thrown into an agonizing 'And I Must Scream'-like void within the being, while their physical body becomes part of the central entity. The Darkness can travel into other cartoon worlds without being limited by the laws of that world. It also has the potential to invade the real world should it claim enough fictional universes. When corrupted, the Darkness' victims act as if they are in a state of intense euphoria, causing them to revere the dark entity for gifting them with such happiness while their mental states are in unimaginable agony. This induces its zombified victims into actively assisting their possessor with tracking and hunting down un-assimilated people or civilizations so they too can be "blessed" by the malevolent force. Currently, the origin of the Darkness is a complete mystery and any record of where it comes from (assuming there are any) do not exist. The Darkness can take the form and shape of anything it wants, growing new limbs, tentacles, heads, and any biological part necessary to its survival. Mostly, the corrupted mutate slowly, starting as their usual counterparts (excluding the Darkness and memes in their bodies), and gaining other limbs as like in body horror. Sometimes, a corrupted's clothes can also be part of the mutation. It can also form its limbs into various weapons it can use against its opponents. Those assimilated by the Darkness can also transform into anything they desire. If a piece of the Darkness is severed from its mass, the Darkness can manipulate the severed piece into a smaller version of itself with the same capabilities. The Darkness can also mutate it's victims to make them reminiscent of AI generated images of themselves.