BEN is the sadistic and seemingly omniscient entity behind the events of the Haunted Cartridge Arc, and has connections to the Moon Children. It is the main antagonist of the Haunted Majora's Mask Cartridge ARG.
History
Prior to 2009
BEN is implied to have been created by Ben's ascension, which took place on April 23, 2002. Sometime afterward, it was trapped in the Majora cartridge. The cartridge was then left in the possession of the old man.
Haunted Cartridge Arc
BEN was first encountered by Jadusable when he bought and played the Majora cartridge. During the recording of day four.wmv, he manifested himself in the form of the Elegy of Emptiness statue, an action he repeated each time the game was played.
During the recording of BEN.wmv, it revealed the cause of Ben's death to Jadusable. It drastically increased its activity during DROWNED.wmv, and even exercised the ability to either change the game from Majora's Mask to Ocarina of Time, or alter the video to the extent that it appears to be the latter. This video featured the first use of its signature phrase, "You shouldn't have done that..."
BEN's activity is believed to be initially minimal during jadusable.wmv, as it redacted the first half of it redacted the first half of the video (then called Matt.wmv) prior to its upload. Having promised to leave Jadusable alone if he helped it, it tricked him into playing further into its game. BEN wrote and posted the summary of jadusable.wmv in the guise of Jadusable's nonexistent roommate, and used the readers' obliviousness to escape via their download of TheTruth.rtf. It confirmed its escape in free.wmv.
Personality
Not much is known about BEN. Though theoretically containing the consciousness of a child, it is extremely malevolent. It deceives its targets, having used Jadusable and several thousands of others to escape into the Internet. It shows signs of psychosis, referring to its activity with Jadusable as a game played for its entertainment.
Abilities
BEN is able to manipulate electronic equipment that it comes into contact with. It transferred itself from the Majora cartridge to Jadusable's computer using the capture card, and was able to control both afterward. Once it infected the computer, it implied that it was able to affect objects physically, particularly Jadusable's mouse. It appeared to be able to cause hallucinations and paranoia, and may have managed to appear briefly on camera in Sounds.wmv.