Shiki seems quite easy to forgive Neku for nearly killing her on Day 2. Granted, he was being an idiot, getting himself in a bad situation as well but even so.
This happens again on Day 4, after Rhyme's death when Neku basically lashes out on the idea of friendship and Shiki calls him out on this, saying he was no different from the Reapers. She later admits that it was kinda harsh. Justified as their situation required cooperation and left no room for bad blood between Partners. Surviving the week took priority on personal feelings.
Emo Teen: Lampshaded in Another Day. "Must... fight... emo urges..."
Ignoring the Ho Yay vibes he gets from Joshua for a moment, there's one point in Week 2 where Minamimoto starts following him and Joshua around, and Joshua wonders aloud whether it's because he's taken a fancy to Neku.
Also, the various male clerks met throughout the game start getting a little friendly to Neku after their FSG meter rises.
Freudian Excuse: In Another Day, it's suggested that his issues stem from waiting to meet a friend, only to find that his friend had died in a car accident. This may or may not apply in the main game, since after Rhyme gets erased, he thinks it is vaguely familiar, but is unable to remember the exact incident.
The Hero: Starts out as a Designated Hero who's only out to survive, but gradually evolves into a true hero over the course of the game.
Heroes Want Redheads: Shiki meant that much to Neku by the end of week one, that she was made his second entry-fee. Subverted twice over: she's not really a redhead, and Kitaniji made her the entry fee because he couldn't revive her. However, since Neku is a redhead...
Improbable Weapon User: Pins! Most Players are limited to a couple, but Neku can use all of them, including Pins that burn, throw things around, cut, shoot mind bullets, and conjure cans of soda that, uh, heal you. And that's just the starter set.
Ineffectual Loner: Enforced example. If Neku doesn't team up with a partner and learn to cooperate with them, he'll get erased.
I will Find You: Finding Shiki, becomes Neku's entire motivation for winning the game AND putting up with Joshua during the second week.
Jerk Ass -> Jerk with a Heart of Gold: Starts out as incredibly cold toward other people and only concerned with himself, but grows into a more caring individual, albeit one with limited patience for Joshua and Beat.
Psychic Powers: He uses a varied collection of pins to combat the Noise.
Real Men Wear Pink: The Lace Bonnet is a lolita headdress, and the Dragon Lady is a Qipao. They both give bonuses to Neku only. That has some interesting implications, considering character-specific bonuses are normally from items the characters themselves like.
Red Oni: To Joshua, if only because Josh is much more calm and collected than Neku during the second week.
Shonen Hair: Has spiky orange hair that can obscure his eyes. One of his character portraits even has him playing with one of the spikes on his bangs.
A mysterious boy who showed up in the UG unexpectedly. Despite his air of arrogance and secrecy, his knowledge of the UG becomes helpful to Neku... when he feels like giving it. Has a long history with Hanekoma.
Cutscene Power to the Max: His "Jesus Beam", when it's first introduced, kills a Taboo Rhino almost instantly. While it is quite powerful and borders on Game Breaker, it would normally take at least a full combo to do so (and, the opponent being a Taboo noise, Joshua would need the light puck). Justified, however, in that Kariya says that if Josh ever used that level of power again, he'd be erased...by Uzuki.
Deadpan Snarker: His vastly intelligent and uses it to snark at Neku whenever the opportunity presents itself (which is pretty much all the time.
God Was My Co-Pilot: Turns out he's the one in charge of the Reaper's Game as its Composer and is just about regarded as such once this tidbit is revealed.
Giggling Villain: The kid giggles constantly and the only expressions he shows tend to fluctuate between "smug", "smartass", and condescending.
Hoist by His Own Petard and Pyrrhic Victory: Figurative example of both tropes. While using Neku as the proxy allows him to win the game, the victory becomes completely hollow since Neku develops as a person during the game, which invalidates Joshua's reason for trying to destroy Shibuya in the first place, i.e. Shibuya's people are incapable of change.
Notably he's not alone, a few nameless NPCs can see Noise and Reapers.
It's Personal: Not so much like the other examples, but he has it with Minamimoto, since he's trying to kill him and take his place as the Composer.
Jerkass: Tends to insult Neku fairly often in a grating tone of voice, particularly when the player isn't doing particularly well in battle. And the whole killing Neku to use him as a pawn to destroy Shibuya thing.
Magikarp Power: When you first get him, he's... not quite as good as Shiki was. He doesn't deal damage until he completes a combo chain and his sidestep isn't anywhere near as useful as Shiki's block. When you get the camera upgrade for his phone, he's a bit better, as he gains the ability to stun enemies, but he's still not very powerful. Then, when he starts levitating, he easily becomes the best partner in the game.
Well-Intentioned Extremist: He was using the Reaper's Game to cast his final judgment on Shibuya and wipe it from existence, claiming that the complacency of its population marks it as a stain on the world in his eyes. Luckily he is convinced otherwise.
Willfully Weak: Averted and justified via Secret Reports. Since he's from a different plane, it causes him to look much younger, lose several of his abilities, and lowers his power output. However, this lets him look like he's a participant in the game, so the Reapers completely ignore him while he makes his own plots.
Voiced by Subaru Kimura (JP) and Crawford Wilson (ENG)
A hot-blooded young skater who'll go out of his way to protect his friends, no matter the cost to him. While Neku likes to keep his thoughts to himself, Beat will always say what's on his mind.
All There in the Manual: The manual outright says Neku will eventually partner up with him no matter what. In fact, the order Neku partners up with his three allies are in order: Shiki, then Joshua, then Beat.
Kariya: If you fight us, you die. Right now, you're treadin' on thin ice. Beat: Ha! You're the idiots, yo. I aint treadin' on thin ice! Shibuya ain't cold enough for ice, stupid! Uzuki, Kariya, Neku:[......]
Determinator: On the 7th day of his week, he starts to fade out due to not having erased any Players or scored any other points as a Reaper. His reaction? He just "pulls himself together" and keeps on fighting.
Difficult, But Awesome: You'll either hate or love his Fusion Star mechanic. If the cards are properly placed, you can potentially get enough stars for a Level 2 special move in a single combo, but it's often hard to find the cards you need, and you lose all of them if you take too long.
Dumb Blond: He's... not that smart. It's noticeable by just about everyone in game, especially when compared to Rhyme, who's also blonde and younger than he is, but shows more forethought and wisdom than he does.
Fragile Speedster: He certainly knows how to skateboard, but doesn't do it in a way that could be called "safe." He's also incredibly fast on his board while he's a Reaper, but doesn't have a lot of defense.
Glass Cannon: Same as the above; great at damage-dealing, not-so-great at damage-taking.
Heroic Self-Deprecation: He doesn't hold a very high opinion of himself at all. This is after seeing how his actions ended up hurting his sister the most, which was something he never wanted.
Hot-Blooded: Although Beat claims that before he came to the UG, he was rather laid back and would only take things at his own pace.
Idiot Hero: Exemplifies it, due to his very simplistic nature. He wants to turn this around though.
Implausible Boarding Skills/Improbable Weapon User: Beat fights using his skateboard, which involves him vaulting forward and grinding the board across enemy faces. He can even repeatedly bounce on foes as his aerial attack. All this is done while Beat is essentially stationary; he does not build momentum for any of his skateboard attacks.
Nice Hat: A black hat with a large skull design. It matches Rhyme's hat nicely.
The Nicknamer: Aside from Rhyme, he tends to refer to everyone else by some moniker, generally based on their appearance. Neku is "Phones", Kariya and Uzuki are "Lollipop" and "Pinky" respectively, and so on.
Off Model: A very minor example. He is shown wearing a silver band on his right ring finger on the game's cover art, but it is absent from his sprites and the rest of the game's promotional art. In-game, the times he's shown wearing it can be counted on one hand.
Plucky Comic Relief: In Another Day and to a lesser extent in the main game. Neku's week with Shiki was a learning experience, his week with Joshua was traumatic, but his week with Beat tends to be seen as the most light-hearted, at least whenever Konishi isn't around. Beat spends most of the game being Hot-Blooded and getting into humorous situations because of it.
Red Oni, Blue Oni: An alternate red to the cool-headed (blue) Neku, who describes him at one point as a "freakin' rhino".
Say My Name: Will sometimes yell "RHYYYYYME!" if you get a Game Over with him as your partner.
Taking the Bullet: Tragically tried doing this to save Rhyme from getting hit by a car, but managed to get them both killed instead. A more successful version of this happens later on when he saves Neku from an unexpected attack during the final moments of the game.
Unskilled, but Strong: Shiki uses her doll to deliver punches and uppercuts. Joshua uses his phone to play with highs and lows, which results in summoning things from bikes to cars to drop on enemies. Beat justs rams into things with his skateboard.
Raimu "Rhyme" Bito
"We don't have time for mistakes either. Haste makes waste!
Sacrificial Lamb: She gets erased in the first week by falling into a not-so-obvious trap set by Kariya and Uzuki.
Satellite Character: An odd justified version of this for Beat. Her fee for entering the UG was unspecified (and according to the Secret Reports, gone forever, because she didn't make it to the end of the week), Beat's fee was her memories of him.
Sibling Yin-Yang: With Beat. They're basically complete opposites in terms of personality and demeanor.
Sixth Ranger Traitor: In Another Day, she pretends her pins were stolen by the Black Skullers and joins Shooter's Kindred Spirits team, only to betray the Spirits while they were distracted by Kariya and Higashizawa. However, she did this because she thought getting rid of Tin Pin would help Beat focus on his comedy routine more.
Anime Hair: Kariya. It's... hard to describe; it's like he combed and styled the front of his hair and then left the back of it a mess. Visually, it seems to be a combination of a slicked-back style and an afro.
Big Bad: Uzuki in Another Day. She was being used by Higashizawa the whole time, though.
Brilliant, but Lazy: Kariya has refused several promotions because he prefers working on the field. Beat is rightfully afraid of fighting him.
Cool Shades: Kariya wears a cool-looking pair of orange-tinted shades.
Can't Catch Up: After Uzuki's defeat, she reveals that the reason she's so desperate to go up on the ranks is because she feels guilty for Kariya refusing his own promotion just so he could keep hanging out with her. In her own words:
Uzuki:I don't wanna be your freakin' ball and chain!!!
Dual Boss: You eventually end up fighting both of them at the same time.
Evil Counterpart: All of Kariya's attacks are supercharged versions of Neku's psychs.
Graceful Loser: More in regards to Kariya, but Uzuki will follow if she must. When Neku and Beat defeated them, they were willing to hand over what the Players wanted, before it turned out to be fake, which not even the Harriers knew.
Hair-Trigger Temper: Uzuki gets angry very easily, but her biggest triggers involve anything that may cost her chances at a promotion.
Karma Houdinis/Easily Forgiven: Neku, and Beat (in fact, especially Beat, who insisted they be spared) never really call out Kariya and Uzuki on erasing Rhyme, or even hold a grudge against them after the fact. Though they were Affably EvilGraceful Losers shortly before and willing to hand over the Rhyme pin. Justified by the fact that it's their job (they were ordered to set a trap for Players) and it's what keeps them alive. Otherwise, they're Punch Clock Villains.
Those Two Bad Guys: See above. They appear frequently, but aren't always antagonizing the heroes.
Tsundere: Uzuki, mildly, towards Kariya. It's heavily implied that part of the reason she wants to advance her career is so she wouldn't have to hold Kariya back, who's implied to have declined his promotion because he wanted to stay at her level.
Ungrateful Bitch: Uzuki complains if Neku saves her from Taboo noise, while Kariya is relatively appreciative.
Unholy Matrimony: They don't get married, but one of the later conversations reveals that the reason Kariya doesn't advance through the ranks isn't just laziness, it's also so he can be with Uzuki. Her reaction hints this isn't unwelcome. Although she still strives to advance herself so that then Kariya could advance with her, and she wouldn't feel like she's dragging him down.
Vitriolic Best Buds: They seem at odds with each other at first (more on Uzuki's part, who's flustered by her partner's mellow attitude, than Kariya), but it's eventually revealed that they're pretty good friends.
Acting as a proxy Game Master for Kitaniji on the first week (Shiki's chapter). He chooses to hide himself from the players until the 7th day and attempts to pound them to pieces with his immense strength.
Big Bad: The REAL Big Bad of Another Day, having used Uzuki and the Black Skullers to "purify" Tin Pin.
The Brute: The most straight-forward of the Game Masters, who relies on his size and strength to see him through battle.
Determinator: The winning condition for the final day of the first week allows him to be able to give up without being erased, but he chooses to fight to the death instead.
Graceful Loser: Since it's possible he was unaware of the scheme Kitaniji was concocting, he treats his defeat by Neku and Shiki with a great amount of respect and dignity, unlike the other Game Masters that take up the mantle after him.
The Heavy: He does most of the Black Skullers' work in Another Day. He did this so he would end up with the pins in the end, wishing to take them from everyone in Shibuya.
Large And In Charge: The largest of the Game Masters and the only one besides the final boss whose Cantus form takes up both screens simultaneously in the DS version (the Noise forms of the other GMs simply take up one screen and use shadows of themselves to take up the other screen if they have to).
Younger than They Look: He is apparently 20 years old. The somewhat "youthful" design of his shoes gives this away via implication, but the lower half of his body is rarely seen in the game itself.
"This is my Game. And I only allow two things. Flawless calculations... and beauty!"
Voiced by Takayuki Fujimoto (JP) and Andy Hirsch (ENG)
The Game Master on the second week (Joshua's chapter). Minamimoto is a considered a "loose cannon" by the other Officers because he prefers to work by his own rules, rather than those of the game. He's called that for good reason, too: He's crazy and working against the interests of his co-workers. He's also quite fond of math.
Badass Boast: Searching some of his junk piles will reveal notes that have him boasting about, among other things, being more awesome than gravity and air.
Badass Bookworm: The dude trash talks people with math and kicks everyone's asses for the fun of it.
Bunny-Ears Lawyer: Plays by his own rules, attacks both Players and Reapers, and generally causes havoc for everyone in the UG when he's a Game Master. Despite this, he has one of the highest Player erasure records in Shibuya's UG.
Catch Phrase: "SOHCAHTOA" (this is actually a pun on the Japanese phrase "Sō ka?", meaning "I see", "Is that so?", et cetera), "So zetta slow!" ("zetta" is the prefix for 10^21, or sextillion) "CRUNCH! I'll add it to the heap"... he's got a lot of these.
Evil Genius: Uses his prodigious math skills to create the rule-breaking Taboo Noise and give himself a Taboo Noise form.
Face of a Thug: In Another Day, Neku is afraid that he might mug him if he gets too close. He turns out to be a pretty nice guy despite still being an Insufferable Genius, though.
Good with Numbers: A math fetishist with his love of numbers taken Up to Eleven. Everything involving his schemes can be calculated and manipulated by his use of math. To activate his Level i Flare, he recites pi.
Insufferable Genius: He puts the "pomp" in "psychopomp". And the "psycho", too, for that matter.
Karmic Death: On the last day of the game, he gets "crunched" and chucked under a junk sculpture rather like the ones he was so fond of making. It's implied that he's not dead, though...
Nice Hat: Also known as Pi-Face's Cap, its slick, calculated style can turn you into a zetta math whiz (probably). He loses it when he turns Taboo.
Nice Job Fixing It, Villain: In his pursuit of the Composer, he outs Konishi's hiding spot on the final day of her mission. Without him being there, it was possible that Neku and Beat wouldn't have found her and been granted the opportunity to clear their mission.
Four Eyes, Zero Soul: Unlike most of the other villains, who each have their quirks that prevent them from being seen as irredeemably evil, Konishi lacks any sort of redeemable quality that would dull her villainous edge. She's purely in the business for her own reasons and almost all her actions as a Game Master are extraordinarily calculating and cruel.
Hot Teacher: In Another Day, she's one of Beat's teachers.
Hourglass Hottie: Though the majority of the character designs in this game include having thin waistlines, Konishi actually happens to be one of the only characters with enough of a bust to invoke this trope.
Ice Queen: To say she's cold-hearted would be an understatement. She's pretty much the most ruthless character in the game, especially towards Beat.
Karmic Death: The only method to expose her in the last phase of the fight with her is to use Rhyme's noise pin, which enables Beat to damage her.
Kick the Dog: Repeatedly with regards to Beat and Rhyme. She even uses her dying words to imply that Beat may have valued Rhyme above all else, but Rhyme didn't hold him in the same regard.
Manipulative Bitch: Once she takes charge as a Game Master, she spends the majority of her time manipulating just about everyone that's still in the UG. Her ultimate goal is to become the Conductor and is using everyone - Players, Reapers, even other Game Masters and her superior, Kitaniji - to reach this goal.
Smug Snake: Because of her intelligence, arrogance, and pride, she takes a lot of pleasure messing with Beat.
The Starscream: To Kitaniji once her true motivations are revealed. See Manipulative Bitch above.
Zettai Ryouiki: As you can see by her image on the right, her stockings and dress ranks her somewhere between A and B on the scale, which is between "Thigh Highs" and "Above the Knee", respectively.
"Any and all specifics are decided by the Composer. That is His exclusive and incontrovertible right."
Voiced by Shane Johnson (ENG)
The Conductor and direct superior of the Reapers. Because the Composer has long been absent, he has asserted control over the Game, and makes sure that everyone, Player and Reaper alike, play by the book. However, it hasn't stopped him from imposing his own "penalties" on Neku for violating the game's rules.
Anti-Villain: His entire scheme was conceived as an alternative to having Joshua erase Shibuya.
Title Drop: A variation of the Japanese version's title (It's a Wonderful World), though not directly. His assimilation plot has everyone under the effects of his pin give a mind-controlled speech, ending it with "What a wonderful world such would be."
Well-Intentioned Extremist: He was actually playing his own game with Joshua, the Composer, to determine the fate of Shibuya. And if Joshua wins, Shibuya is destroyed. And guess what? Neku was playing on Joshua's side. Oops!
"If you want to enjoy life, expand your world."
Voiced by Bart Flynn (ENG)
The humble owner of the WildKat coffee shop on the upper-east side of Shibuya.
Broken Pedestal: Neku initially sees him as a good source of advice, and is amazed to learn that he's CAT, but his faith in him is shaken as he believes that he is the Composer. It ultimately turns out that while he has had a hand in the backstory behind the game, his actions were ultimately for the goal of preventing Shibuya from being erased.
A pair with uncertain circumstances surrounding their death. Both are genuinely nice people, who tell Neku not to give up hope after what happens to him during the second week. Hinted to be a couple but never explicitly mentioned what their relationship is.
Battle Couple: Being partners with someone comes with the setting for the Reaper's Game, but these two have a lot subtext that implies that they're actually a couple.
Dark Horse Victory: While Neku considers his semifinal Tin Pin Slammer match against Shooter the linchpin of whether or not the Players are erased that day, Sota ends up winning in the finals. With help.
Kawaiiko: Nao-Nao looks a good bit older than the stereotype, but she's a cutesy kogal through and through.
Spanner in the Works: An indirect example only visible in hindsight. Talking with Sota and Nao causes Neku to realize other people have just as much value as he does, turning him away from the cycle of isolation Joshua has been coaxing him to continue along. This in turn changes Joshua's mind at the very end.
Eri is Shiki's best friend. Shiki uses a picture of Eri and herself as the wallpaper for her cellphone. Eri is described as charismatic and popular and she thinks of Shiki as a great friend and seamstress with a keen eye for details.
The Fashionista: She's very much into the latest fashion and is even a designer herself. She relies on Shiki to make her designs come to life, though.
Satellite Character: Her character is largely based around her relationship with Shiki. She is only ever seen talking with a minor character about Shiki.
Shuto "Shooter" Dan
A young NPC who is a major fan of Tin Pin Slammer.
Curb-Stomp Battle: Can possibly occur during Tin Pin, if you're not prepared. Also happens as a in game cutscene in which during the tournament he defeats Neku at the speed of light.
The Ditz: In Another Day, half the time he isn't listening to the people he's talking to and just wants to challenge them in a game of Tin Pin. He also fails to grasp the gravity of some of the burdens others have with the spirit of Tin Pin.
Glowing Eyes of Doom: See above. He also gets them in Week 3, Day 7 if you enter his shop, under the effects of the Red Skull Pin, though he manages to snap out of it.
Hypocrite: He hates the Shadow Ramen store for deviating from traditional ramen recipes, only to realise that he's been doing the exact same thing himself.
Retired Badass: In "Another Day", he turns out to be the elusive Dr. Pin Sr.
Makoto "Mick" Miki
Originally a timid and unsuccessful businessman, he quits his job for Gatito (or, at least, a subsidiary of them) and opens up the Shadow Ramen store in the second week to rival the Ramen Don shop. He is also responsible for helping spread around the Red Skull pins, their purpose becoming much clearer by the end of the game.
Mistaken for Gay: After opening up Shadow Ramen, where he takes up work, watch what he says (and his facial expressions!) when you increase his Friendship Gauge. Well... he mistakes Neku for a gay mistaking him for gay, anyway.
Salary Man: What he started out as, then he tried to be a business mogul, but that backfired on him.
Leader of the band Def Märch, which also includes fellow Reapers B.J. and Tenho.
Anti-Villain: Type IV. 777 is pretty nice overall and seems more worried with his band and bandmates than actually being a Reaper. The only time he fights you, he's even honourable enough to give you a key after Neku spares him. His subsequent erasure by Konishi is used as a big Kick the Dog moment.
Everything Is an Instrument: Tenho steals the band's microphone, which, in turn, is swapped by Minamimoto for his megaphone. The band ends up attempting to incorporate the megaphone into their act.
The Resenter: Implied to resent 777 a little for stealing the spotlight all the time.
The Slacker: Perceived as this because of his rampant forgetfulness, which leads him to do things other than what he was tasked to.
Ai and Mina
A pair of schoolgirls who are good friends. Lately, their friendship has been put under some strain when Ai suspects Mina is trying to steal her crush, Makoto, away from her, although it all gets cleared up with Neku and Shiki's help.
Clingy Jealous Girl: Ai, to an extent. However, it turns out she does appreciate her friendship with Mina deeply.
Friendship Moment: Mina buys some tickets to a Tin Pin Slammer event to give to Ai so she can go out with Makoto. Unfortunately, Ai misunderstands her intentions at first, but apologizes as soon as she finds out.
Green-Eyed Monster: Ai gets suspicious of Mina the minute she sees her talking to Makoto alone.
Nice Girl: Mina, which is contrasted by Ai's easily invoked jealousy.
Not What It Looks Like: Mina and Makoto really weren't doing anything together, apart from chatting, but Ai immediately starts to assume the worst when she catches them talking to each other. It didn't help that Mina was trying to keep quiet about her planned surprise, which only added to Ai's suspicions.
Another Day Tutorial Guy/ The Wizard of Slam/Shinji Hashimoto
A Reaper-looking person who teaches Neku about Tin Pin.
Big Good: Of Tin Pin in the Another Day universe and possibly the main universe.
The Chessmaster: He helped set up the events of Another Day so the Omega Slammer would be completed.
Creator Cameo: He's the helped invent Tin Pin in game, but in actuality he's The World Ends with You's producer.
Foreshadowing: You can find thoughts in the main game hinting at his appearance. More than that, you can encounter him yourself on Week 2/Day 3 of the main game, the day AFTER you're forced into a Tin Pin Slammer tournament as part of the plot.
Nonstandard Character Design: She actually fits in with some of the shopkeepers with her appearance, albeit younger looking than almost all of them, but you wouldn't think that she'd be a Reaper if it weren't for the standard black wings.
Valley Girl: "I totally have, like, sooo much awesome stuff. So, like, what are you lookin' for?"