The main protagonist and Seleção No. 9, Akira Takizawa awakens outside the White House with no memories and stark naked. He befriends Saki Morimi, a Japanese college student on vacation in America on her way to catch a flight home. Armed with a cellphone, Takizawa learns he is part of a game created by one Mr. Outside to use the ten billion yen on the phone to improve the state of Japan. Takizawa meets his fellow Seleção, whilst trying to recover his memories before and after he was selected for the game.He was born on January 7, 1989, making him one day younger than Saki.
Action Survivor: He gets involved in a lot of action - being attacked by a oil tanker, taking on a missile attack, escaping numerous explosions, etc, and always comes away relatively unscathed.
Amnesiac Dissonance: Discovers he was possibly responsible for the Careless Monday missile attacks, but actually used it as an excuse to save 20,000 NEETS that helped him evacuate citizens from being arrested for the same thing, and then erased his own memory to cover up his and their tracks.
Heroic Bastard: In the films, he is accused of being the illegitimate son of the deceased prime minister of Japan. This is later proven to be false.
Heroic Sacrifice: Willingly gives up his memories twice to save others. The first time he wound up naked in America, and the second time he became an international celebrity known as the Air King, and revealed to possibly be the son of the dead Japanese prime minister.
I Have Many Names: He has numerous passports. In the films he goes by the name of Akira Iinuma.
Nice Guy: It's impossible for anyone to hate this guy.
Parental Abandonment: His mother was very distant, she often just dumped him at a movie theater and went about her day, and before long she actually abandoned Akira, who was just five years old at the time, in the middle of a shopping mall.
Pet the Dog: He owns an adorable Shiba Inu, previously owned by his mother.
A 22-year old university student in her graduating year, Saki meets Akira in Washington D.C and the two quickly become involved in each other's lives. Saki is Akira's biggest supporter and love interest. A member of Eden of the East, Saki's ability to enhance the value of junk items has helped the group to be successful. She could only go to college with the aid of her sister and brother-in-law, whom she has been living with after the death of her parents when she was a baby, and plans to find work in an office because she is ashamed of living off their money. While she is a selfless girl, she is very opinionated about the condition of the country after Careless Monday.She was born on January 6, 1989, therefore she is one day older than Takizawa.
Saki's inner circle of friends who make up the staff of an online image recognition system and recycling group. They start off as a one-room group until they expand into a full-time business with an office. The groups members include leader Kazuomi Hirasawa, deadpan programmer Mikuru "Micchon" Katsuhara, Satoshi Osugi who has a crush on Saki, spectacled Kasuga, Sis who has a fondness for cute things, and Yutaka "Panties" Itazu, known for (formally) not wearing any trousers and is a skilled hacker. Takizawa later becomes a member of the group.
Shrinking Violet: Micchon, but only when she meets new people. Takizawa affectionately nicknames her "Mittan", much to her embarrasment.
The twelve Chosen Ones selected by Mr. Outside to save the country. Each member is given a special cell phone with ten billion yen which they must use to improve the country. Each Seleção has an unseen assistant linked to the cell phone named Juiz, who can help them fulfill almost any request they make, but each one spends some of their money. If they abuse their money, do not play the game, or spend all of their money, the Seleção will be eliminated by the enigmatic Supporter.
Blessed with Suck: They're given a fortune, but are told that they'll be killed if they use it for personal gain, don't play the game, or run out of money, and are manipulated so that they'll fear being assassinated by their fellow Seleção.
The Cameo: Seleção 3, 7 and 8 only have cameo roles. 7 doesn't even physically appear.
Fiction 500: Must be ultra-wealthy given his ability to give 10 billion yen apiece to twelve people.
I Have Many Names: Along with Mr. Outside, he also acts as Seleção No. 12 and the Supporter.
The mysterious woman who helps the twelve Seleção and aids them with their various requests, no matter how absurd they may be. She is actually an artificial intelligence in the form of twelve devices disguised as cargo truck trailers which are constantly moved around for protection. Juiz appears to have twelve different personalities to suit the Seleção.
Split Personality: Juiz has twelve different personalities to match each Seleção. Juiz is very loyal and obedient to No. 1, speaks playfully to No. 2, openly criticizes and mocks No. 6, and is very kind and supportive of Akira.
Grumpy Bear: He's quite moody and pessimistic, believing that ten billion yen is not enough to save the country.
Karmic Death: Kondo's wife believes he is having an affair with Juiz and she kills him in revenge.
Kick the Dog: He attacks Takizawa, beating him up to steal his phone.
Mister Exposition: Kondo explains things to Takizawa during their encounters and manages to send Takizawa off to find the other Seleção before he dies.
Motive Decay: Kondo's motives are hard to make out. He seems to enjoy his new lease on life with the money has has, and has Juiz assassinate people that bother him. However, upon his death, he claims he was just trying to do the right thing in life.
Seleção No. 5. Dr. Hiura is a brain surgeon who uses all of his money and is the second Seleção to be eliminated although he is the only one to be personally eliminated by the Supporter. Takizawa tracks him down to a state-of-the-art hospital for the elderly where he is the chief executive. A kind middle-aged man, Dr. Hiura embraces his known fate, having played the game not to save Japan but to rather improve the hospital systems. He mimics a phone call from Mr. Nobody to inform Takizawa of their involvement in the game.
Instant Sedation: Hiura drugs and knocks out Takizawa after he claims he is No. 9.
Hero with Bad Publicity: He accomplishes his goals through bribing politicians, and so in the press receives negative coverage as a source of political corruption. On the other hand, his patients consider him a saint.
Nice Guy: The only Seleção aside from Takizawa and No. 3 who appear to be completely friendly.
Not Quite Dead: Panties discovers Dr. Hiura is alive and kicking, but his memories of the game were wiped by the Supporter.
Selfless Wish: Dr. Hiura is unafraid of dying, giving all his money to improve the medical system in Japan.
Kuroha Diana Shiratori
Seleção No. 11, Kuroha is president of a model agency, but also doubles as the infamous Johnny Killer who kidnaps criminals, tortures them and then chops off their penises with a cigar chopper. However, she is does this to help protect scorned women, possibly having been harmed sexually herself. She develops an interesting relationship with Takizawa, saving him twice.
The Big Bad of the show, and Seleção No. 1. A former politician, Mononobe became head of Ato Saizo's company and planned to become Mr. Outside himself. He is quite resourceful and smart, identifying most of the Seleção, and recruits No. 2 and 10 to work with him. His ultimate goal is to become ruler of Japan via terrorist attacks and eventually he plans to overthrow the government and replace it with a new one at the cost of individual freedom.
Predatory Business: Subverted. This trope involves actual people instead of businesses, Mononobe firing missiles to eliminate the other Seleção's versions of Juiz. He succeeds in taking down No. 2 and No. 12, whilst Kuroha (No. 11) blocks a missile to keep Takizawa in the game.
Seleção No. 2, Tsuji is in the marketing business and works with Mononobe and Yuki. Unlike them, he is not really interested in Mr. Nobody's game and just wants it to be other, and hasn't used any of his money. He starts making his move in the first film.
Evil Is Not Pacifist: He's horrified during the series when Mononobe uses his car to run down Panties, but as Mononobe points out, he has no qualms about using missiles to kill thousands of people.
Evil Minions: He was one to Mononobe until he was betrayed by the latter.
Killed Off for Real: He attacks Mononobe at the end of the game, unaware the latter has had his memory erased of the game as a gift from Mr. Outside. He shoots Mononobe only to get run over by his car.
Not Quite Dead: Yuki faked his death by destroying his cell phone but surprised Tsuji when he revealed he was alive.
Roaring Rampage of Revenge: His basic motivation in the series. After his parents died from being overworked, Yuki got nothing out of their hard work and was "betrayed" by Japan's bureaucrats and selfish businessmen.
Seleção No. 6. Naomoto is an eccentric filmmaker who goes Ax-Crazy in his plan to kill Takizawa and Saki for a film — by blowing them up whilst they have a shower together. His plan falls through thanks to Kuroha, and he tries to kill Takizawa with a flamethrower whilst recording the scene. He is arrested soon after.