Composer

The Composer was an entity who had ultimate power over the sub-dimension known as the Underground (UG) and oversaw the Reapers' Game that was held within.

History
In 150,080 CMT, the Composer opened an inter-dimensional vortex on the planet Linkit that sucked in several Agrippa and Froog and transported them to the Underground (UG). The Composer then broadcasted a message to the entire universe where he invited people young and old to come to the UG to play the Reapers' Game. He added a warning that anyone who wanted to enter the Reapers' Game would have to surrender their powers first, but promised that the winner of the game would gain control of the UG. However, because Trantoshen was the only one who came to investigate the vortex (and only because he wanted to find a way to close it), the Composer instead decided to populate the Reapers' Game with the deceased, making use of an abstract form of matter named Soul to resurrect almost every single dead BZPB character inside the UG in identical but powerless bodies. The Composer welcomed the new players to the UG and informed them that they would need to form Pacts by sorting themselves into pairs in order to participate in the tournament; failure to do so would result in the odd ones out being returned to death. While the crowd of players were surrounded and rounded up by Carcin Noise, the Composer added Trantoshen to the ranks of the deceased by sucking him through the vortex and stripping him of his powers.

The Composer then bestowed a Pin upon each player who had successfully formed a Pact with another player, explaining that the Pins would now contain the life force and physical strength of their owners, meaning that, if a player's Pin was stolen by another player, their Soul would be dispersed and they would cease to exist. After the Composer ordered the players to touch the Carcin Noise to proceed to their first challenge, the disembodied voice of Sho Minamimoto repeated the Composer's orders to the undead contestants with vigor. The Guy Who Was Engulfed In Milk obeyed the Composer's orders and poked one of the Carcin Noise, which caused him and his Pact partner the Happy Person to be transported to the same deserted city street, albeit in different Dimensional Zones. The Composer explained that, although neither player could see the other, both shared the same physical health, so if one of them were to die, the other would die too. However, the Composer added that the same rules would apply to the Carcin Noise they would face in their first challenge.

Akzer made a proposition to the Composer where he asked for himself and his allies to be returned to life so that they could hunt down and slay the people who had killed them in the real world, which would be a mutually beneficial outcome for both parties because the Apprentices of Caiaphus would get revenge against their killers, while the Composer would get revenge against those who ignored his invitation to the UG, as well as more players added to the Reapers' Game in the form of the Apprentices' victims. Tulio interjected to tell the Composer that, if he accepted their offer but the Apprentices failed, they could either return to the UG or lose their Pins, whichever the Composer preferred. However, Minamimoto rejected Akzer's proposal on the Composer's behalf, so the Apprentices returned to fighting among themselves.

Trivia

 * This character is referred to as "the Composer" because, in The World Ends With You, the Composer was a rank held by the administrator of the Underground whose purpose was to create and enforce rules for the Reapers' Game. However, the portrayal of this Composer differs greatly from the Composer who appeared in TWEWY, who was Yoshiya "Joshua" Kiryu, a boy who controlled the Reapers' Game through an intermediary known as the Conductor instead of directly interfacing with the game himself. This Composer was probably just User Shroom.