Action Girl: Every single female character. Especially Black Cat.
Adaptation Distillation: Spider-Man - despite the incarnation featured being the Movie version, Spider-Man has the majority of non-contradictory memories from his Amazing counterpart. For example, he has memoires of prior meetings with Deadpool and Black Cat, despite neither being shown on screen. (Despite Black Cat being featured in the 2004 Spider-Man 2 video game.)
The list so far: Sonic, Kazooie, Dahlia, Banjo, Vile, Durzo, Dubsy and Fiscal.
Arch-Enemy: Spider-Man and Onic are this to each other. Spider-Man considers Onic to be everything Sonic failed to be, and believes he is now lost to the darkness. Onic craves revenge on Spider-Man for his previous humiliating defeat at the webslinger's black-suited hands. He is now hatching a plot to do so.
Spider-Man is attracting these like flies, with Onic (See above), Wesker, who remembers him from Marvel VS Capcom 3 and wants to kill or capture him and use him as a test subject, and Dean Fiscal, who wants him to give in to the Black suit. Plus, the villains have said in no uncertain terms that Spider-Man is target number one and needs to be taken out pronto.
A case could be made for Norman and Dahlia, as each represents what the other hates.
Speaking of Dahlia, obviously Banjo hated her more than anyone, even though their battle was soon over.
Ascended Extra: Ragtok the Giga Reaper, a seemingly throwaway mini-boss in the Nightmare Castle arc... who is now back in Crossover Central on the villains' team.
Author Avatar: Dubsy. What, did you think he was just an ordinary reality-warping cartoon with a hat? No, silly, he's the GM!
Word of God claims he is the Creator's hero from Drawn to Life. So he falls under NCP.
Recently became Dark Dubsy, who is now battling Spider-Man and GLaDOS. Unfortunately for him, even the GM's powers were not enough to save him.
Badass in Distress: Spider-Man first got turned into a Neo-Venom by Fiscal and had to be rescued by Kisuke. He was then kidnapped soon after by Specter. Wilfre once attempted to control GLaDOS and Spider-Man had to save her, with help from Deadpool. Sonic also suffered a slight case of death at the hands of GLaDOS so Spider-Man attempted to bring him back. It didn't go so well.
Badass Normal: Quite a few. Marth and Norman are the biggest examples.
"How dare you say that! Everyone wants to buy my cookies!"
Vegeta, after someone ripped his running gear and after Deadpool told him to ring the doorbell respectively.
Cluster F-Bomb: The thread gets hit by a surprisingly imaginative troll. It starts to get pretty ridiculous.
"ROW MY BOAT DOWN THE SEEMLY [Censored] CRACK
"@%?$&! PARAPLEGIC WALRUS #&$@ER"
In a bittersweet moderation victory, the offending posts were all removed. This leads Deadpool to have a short breakdown as he feels the posts (and the troll's existence) forcefully ripped out of his mind.
Clothing Damage: Spider-Man and Deadpool have both suffered clothing damage over the course of the role-play.
Deadpool seems to have an infinite amount of masks.
Spider-Man's current level of damage is akin to his costume's state near the end of Spider-Man 3, but with an intact mask. After the special. His suit is badly damaged and he only has half his mask left. Until what's left of the mask is given to Vegeta's dog, that is.
Curbstomp Battle: A combination of a flawed emotion manipulation with the symbiotic Black Suit allows Spider-Man to deal one of these to Onic the Hedgehog, to the point to which the latter is beaten into unconsciousness.
And this curbstomp battle came immediately after another curbstomp battle, in which Onic knocked out Parsee with a single slap.
The fight between Deadpool and Skulduggery Pleasant can barely even be called a fight.
Though technically not a battle, Lord Vile who had almost killed everyone in CC was just shot and killed by a mysterious new comer, Glitch.
Poor, Poor, Charlie.
Averted with Wesker, who despite fighting on the losing side of 3 on 1, he actually seems to be fighting on even terms. Played straight with the Creeper, who Wesker Roflstomps by shooting him 3 times.
The duel between Kisuke and Vader eventually descends into this, once Vader gets the Force involved against a tired Kisuke.
Death Is Cheap: Sonic, Vegeta and Rainbow Dash were all killed by a giant meteor. All 3 were revived, some of them even gaining new powers in the process. However, Sonic was later Killed Off for Real.
Despair Event Horizon: Banjo changes completely after Kazooie's death. Had he survived the battle, he'd have only gone on to suicide.
Disc One Final Boss: The big bad Wilfre is defeated, all is well... then he runs back to the true(presumably) Big Bad, gets killed and the roleplay moves into chapter two.
Dodge the Bullet: Almost everyone who has had any sort of projectile fired at them has done this.
When applied to Darth Vader, the bullet dodges him.
The Dragon: Wilfre was this to Vile and Shadow has become this to Parsee.
Evil Plan: Specter has one for taking the emeralds from Spider-Man and it requires quite a bit of preparation. He doesn't take too kindly to Onic disrupting it.
Evil Versus Evil: Onic gets jealous of Wilfre's appreciation of Parsee and gets into a brief fight with her.
Evil Laugh: Wilfre during the first chapter/ season.
Fusion Dance: Onic and Vegeta fuse to create the half-cool half-terrifying Onigeta. They use this amazing power to stack toothpicks and look at stars.
Gone Horribly Wrong: An attempt to prevent the Ascended Extra member of the Villain Team from suffering a more fatal version of The Worf Effect, or being reduced to being one of the Big Bad's mooks ended in the whole roleplay being shut down instantly. However, the creator backtracked after a few days, and the RP has been reopened.
Hostage for MacGuffin: Specter plans to trade Spider-Man for the remaining Chaos Emeralds. Or rather, make this out to be his intention and then kill Spider-Man anyway.
Idiot Hero: The self proclaimed "Protector of Crossover Central" is an idiotic half circle known as Dubsy.
Karma Houdini: Welkin assisted Dahlia and attempted to kill multiple heroes but has been allowed to join the good guys since they need all the help they can get, indicating he may never get his just desserts.
And recently his player has said that he no longer intends to play as him.
Joke Weapon: For the Crossover Arsenal, Marth is more or less forced to pick a Nail Bat of all things for his weapon. While normally it would be a good weapon, compared to most of the other weapons, it qualifies. May eventually become a Lethal Joke Item though.
The Man Behind the Man: Wilfre may have seemed to be pulling the strings but Vile was pulling Wilfre's strings all along. Although it turns out that Glitch was really pulling the strings of both Vile and Wilfre.
Only Sane Men: Spider-Man, Marth and Jayden seem to be showing realistic signs of the pressure from being separated from home. Aside from them, few are actually qualified for the term sane.
And on the villain side, Darth Vader could qualify for this, having matured a lot since Revenge of the Sith, to the point of which he mentally realizes the insanity of others, and is actually calm and calculating for most of the time.
Power Levels: Vegeta brought his scouter to Crossover Central. Spider-Man somehow reaches 13,000, if only for dramatic effect.
Punched Across the Room: Well, it's a slap and it's outside but this trope happens to Parsee when Onic gets mad at her.
Put on a Bus: GLaDOS, due to her writer wanting to switch characters. The ability for all players to have 2 characters was added not too long afterwards.
And what do you know? She came back a while after the 'buddy system' was introduced.
The rest of the cast couldn't care less about Laharl by this point.
This has happened to Norman and Welkin TWICE! Norman due to issues with the writer's RL, and Welkin because his writer kept getting banned for spamming. Welkin is going to be gone for about another 2 1/2 months....
Various characters have got on and came back on the bus, some never returning due to loss of interest or RL issues.
Save the Villain: Subverted. Specter saves Ragtok the Giga Reaper from Urahara trying to finish him off, though he was doing it to try to win some trust and to be able to have Ragtok join him later on. Played straight earlier when Marth saved Onic from Parsee.
Serial Killer: On top of the murders she commited in Ace Attorney, Dahlia kills two others during the roleplay.
Spanner in the Works: Onic in the battle with Wilfre got jealous of a more-powerful-than-usual Parsee and slapped her unconscious. Wilfre was distracted by this in his fury, leaving himself open to attack, which led to his defeat. Onic may now be doing it again, going off where the heroes are alone instead of staying put like Specter told him to. He's already being cornered by three of the heroes.
Supervillain: Most of the villains in CC fall under this, most notably Wilfre.
Sword Fight: The RP's combat style has finally begun including these, beginning with the large scale lightsaber battle in Nightmare Castle.
Take a Third Option: Specter tries to do this when Fiscal threatens to keep Spider-Man as a Neo-Venom if everyone doesn't serve him by destroying Fiscal's ring. It doesn't work and Kisuke ends up having to make the decision.
They Fight Crime: Norman, Spider-Man, and Marth originally, but now includes Cadea, Kisuke, and a few others.
Ultimate Showdown of Ultimate Destiny: The characters of the Roleplay have divided into 3 main groups: Team Heroes, who are in possession of 6 of the 7 Chaos Emeralds and are trying to get home while defending CC. Team Villains, who possess the last Chaos Emerald, and are trying to kill the heroes and use the Emeralds to rule over CC. And Team GM, the characters controlled by the GM who want to rule over CC for unexplained reasons and may or may not be connected. There are also smaller groups that work by themselves to achieve their own goals or simply stay out of the fighting altogether.
Un-Cancelled: The RP was cancelled and locked after a dispute between the creator and a portion of the main cast. However, it didn't last long and the thread was re-opened soon after.
Spider-Man, GLaDOS, and Wolfwood, during the Dark Dubsy battle. GLaDOS literally erases Dark Dubsy, and Wolfwood nearly blows him to bits with his Punisher.
Villain Team-Up: Aside from from the main villain group, we have Darth Vader and Albert Wesker in their own faction. While they plan to join the main villains, Wesker only plans to do so until he has no more use for them and then get rid of them.