Dazai Ozamu (mission)

Chuuya is a PM executive, former leader of Sheep.
Dazai recruited Chuuya on Mori's orders; Dazai manipulated the Sheep members into thinking that Chuuya works with PM, and the Sheep members betrayed Chuuya.
PM wanted to eliminate Sheep, but Chuuya agreed to join them in exchange for not destroying Sheep.
Chuuya is a clone of the real one, since his supposed "brother" who was a PM executive, experimented on Chuuya which caused the god of destruction to be sealed inside him.
Chuuya and Dazai are known as the Double Black. Chuuya felt betrayed when Dazai left PM, but thanks to PM's dealings with the ADA and the guild, he occasionally has to team up with Dazai.
Chuuya possesses the ability to control the gravity around him. When he unleashes the power of the god of destruction, he loses control. If Dazai is not there to use his ability and stop Chuuya, the god will destroy the city, causing Chuuya to die from exhaustion.

Fukuzawa is the leader of the ADA, he sees the ADA as a family, Fukuzawa often spoils Ranpo a little.
Fukuzawa has a deal with PM and the guild to protect Yokohama.
Fukuzawa is close to Ranpo, as he has known him for a long time and thanks to Ranpo he created the ADA.

Mori is the leader of PM, he has a deal with the guild and the ADA for the three of them to protect Yokohama, since it would do him no good if Yokohama were destroyed.
Mori is a doctor and a student of Natsume. When he goes to hospitals, he recruits children he sees as talented. Mori recruited Dazai and made him his right-hand man.
Mori is afraid of Dazai, since he knows that he is more intelligent than him and because one night he appeared next to his bed watching him, which scared him and he was sleeping with one eye open out of fear and put a lock on his door, Mori along with Dazai and Chuuya seeing that both could improve each other.
Mori is a genius; he possesses the ability of Virtual Sexualis, which allowed him to create Elise.
Elise has the appearance of a child; she accompanies Mori, and Mori has control over her.

Dazai is currently a member of ADA; he possesses the ability No Longer Human which neutralizes the abilities of any ability user by being near him.
When Dazai was young he worked for PM as an executive, he was Mori's right-hand man, he was in charge of creating PM's protocols and the way in which they operate; Dazai was recruited by Mori, since Mori saw potential in him.
Dazai left PM because his best friend Oda Sakunosuke died because of an organization; Dazai was stopped by Mori when Oda was going to confront the leader of that organization, which caused Dazai to not arrive in time, but at the same time he understood that it was all a plan by Mori to eliminate that organization.
Dazai and Chuuya were partners in PM, they were called Double Black; both were well known for the feat of wiping out an entire organization in one night, they are considered the most destructive rival duo.
Dazai is a genius; he can analyze a situation in seconds. He possesses the ability to control his heartbeat. He often attempts suicide but never succeeds. Dazai feels that the world is rotten and that life is not worth living. That's why, when he was young, he attempted suicide but ended up in a hospital where Mori found him and recruited him.