The Entity possessing 90's Kid
The Entity, born as Missingno, was an eldritch being of vast power found in the Channel Awesome Multiverse. A destroyer of worlds and realities, Missingno sought to eradicate all reality, so that only itself could exist.
Lord Vyce was a survivor of the Entity's attacks, and sought to create resistance against it. Though his attacks had no real impact against it, Missingno hid on Earth, leading Vyce into conflict with Linkara. Linkara triumphed over Vyce, leaving the Multiverse defenseless.
The Entity began toying with Linkara, randomly abducting people. This extended to Linkara's close allies, and other various reviewers. The Ninja Style Dancer figured out what the Entity was, but before he could inform Linkara, 90's Kid, possessed by the Entity, distracted Linkara and abducted him.
Soon, 90's Kid and Linkara were the last people on the planet. The Entity eventually gave itself away, and effortlessly showed invulnerability to all of Linkara's attacks. Linkara took time to think, and realized the flaw in Missingno's logic - That if it were the only thing to exist, and for it to be existence, what would be the point of existing?
Linkara then questioned what happened when an Outer god died, and the Entity, not knowing, decided to find out.
Vyce would later return, refusing to believe that Missingno was dead.