Alright, I've been giving this some thought and I think I've got enough to post now.
Presenting....The Game Rangers
This ragtag group of heroes in power armor wanders Gamindustri on a never ending quest for justice. Complete with boxes upon boxes of colorful explosives to set off and poses that took hours to perfect, these heroes are ready to save the world, one dream at a time.
... Unfortunately, in a world where popularity literally rules all, villains tend to be defeated before the Game Rangers can get involved or
they're simply too strong for the Game Rangers to handle in the first place. With ratings and toy sales plummeting, these heroes have finally had to resort to drastic measures - creating fake villains so that they can defeat them themselves.
This group of misfits do not take the spot of main villains when they appear, but rather, they appear is side characters that the CPUs and their friends battle from time to time - the CPUs occasionally stumbling into a "scene" that the Game Rangers had created, or sometimes the Game Rangers occasionally barging into the actual plot in an attempt to be real heroes... but ending up just getting in the way with their tropes and cliches.
Besides for the mysterious Red, each member is a native from each of the primary nations and as such uses that as their color. In the post-game, in an optional battle against them, the party will first face the Game Rangers, then their robots, and THEN the combination of all of their robots together one after the other. Better bring your Rider Belt!Game Red
The leader of this team, Game Red's background is a mystery. He wields a large sword that one would think someone his size, power armor or not, would have trouble handling - well, fear not, CPUs! It's actually a prop. Game Red was initially against the fake villain plan, but once he saw the 0.01% rating boost, he became all for it. In later battles, Game Red will start using a real sword as his love for justice starts to burn harder than ever before.
Being the leader, he tends to be loud and go off about justice. His words, as hammy and over the top (and sometimes flat out wrong sounding - think Pirohiko from ZHP) as they can be, will always inspire the members of his team. However, he sometimes lets his position as the team's figurehead go to his head, to the point that he hogs the camera during cutscenes, even with his team protesting in the background, though he never means any malice by this.
As Game Red is the only guy in a group of girls, he's often accused of being a playboy, however, his one and only love is justice. That... And he, mysteriously mind you, often starts to stammer and blush through his armor when being addressed by Purple Heart, acting very un-herolike in the process. But that's all part of his mystery and charm!Game Purple
The second-in-command and once Planeptune native, this lovely armored lady joined the Game Rangers after her sister got chosen to be an idol over her. She hoped to use being a hero to boost her popularity and steal away all of her sister's fans, and as such, acts more like an idol than a hero a lot of the time. She is the only Game Ranger that appears out of costume, often attempting to be an idol and the team's spokesperson, though she never admits her identity despite the obvious similarities in gestures and voice (as she makes no attempt to cover her identity) - it's instead a running joke that every member of the cast knows who she is despite her never admitting it.
Popularity is the most important thing to this devious hero, and once she got into the heroism business and saw the bright smiles of the children, it filled her heart with a joy she had never felt before... which in turn meant she had no qualms faking villains in order to get that feeling again. Naturally, making the fake villains was her idea.
She uses a gun when in battle with Game Red, but when she appears alone she'll break out a sword that she claims she's saving for when she goes solo. Despite these claims, she never shows any intention of leaving the team when with them, and can be just as goofy as the rest of them when they're hyped up. Game Black
The Lastation native, this femme fatale is an out and out parody of the iconic Yuuki Gai character from Chojin Sentai Jetman. She's a womanizer and will hit on anything with a pair of breasts, and somehow she is usually seen smoking despite wearing power armor. Her favorite targets are Noire and Blanc, because she loves a fight, and occasionally her team members, and being the selfish character that she is, she'll often give away the team's plans without so much as a fight if a pretty girl asks her - and even sometimes if they don't so long as it gets her going. Her weapon of choice is a set of throwing knives.
Despite being the lone wolf of the team, Game Black will work as a team player fairly often, though she gets into it with Game Red and Game Purple pretty regularly as she has an issue with authority. However, this is usually played for laughs rather than as a serious thing - the girls will tease and mock Black for even wanting to be part of a team in the first place, given how she can be such a lone wolf, which drags out the fact that Game Black is actually a huge tsundere - but what is she tsundere for?Justice
For those of you who are familiar with Jetman, if you're wondering...Game White
The sweet and innocent member of the team - the loli. Like the CPUs of the nation she hails from, Game White, even with all the armor on, has a much more childlike appearance than her teammates, and acts more like a child as well - yet for some reason, the rest of the team (barring Game Black, who doesn't seem to care what age her targets are) acts nervous around her whenever she gets worked up. Her weapon of choice is just one of those ball-and-cup toys, that's not so bad, right...?
Game White's secret is that she's actually something of a berserker, and the only reason she joined the team was to use it as an excuse to beat things up. Though she certainly believes in heroism and all of that good stuff, when you get this little lady worked up, she'll toss her toy aside and bust out an out and out spiked mace - something she seems extremely well trained in using.
Surprisingly, once "put in her place" by Iris Heart, rather than come to fear the CPU, the sweet and innocent Game White comes to see Plutia as a playmate and Iris Heart as someone she can let loose on. When the two let loose and fight each other, all sides - Game Ranger and CPU and real villain alike - just stop any argument and watch, because there's no way they want to get involved after that.Game Green
Perhaps the most normal member of the team, Game Green is a Leanbox native who is actually a recovering hikikomori. She used to never leave her room, only playing video games, watching hero shows, and roleplaying as a hero in her games, until she saw an ad online that offered her a chance to become a hero for real. If not for the fact that she's still technically "inside" her suit, she never would have been able to join the team, and Game Black frequently threatens to take the suit off to get a reaction out of her. She was the Game Ranger most against faking having enemies, but because of how soft spoken she can be, she's usually overridden before she can get a real complaint in.
Being a huge hero otaku, Game Green might actually have a passion for justice that rivals Game Red's - when she gets going, she'll start rambling and going on and on until she catches herself and quiets up. Having a history in MMOs, she actually has a long standing rivalry with Vert, but once they realize this, Game Green tries to hide from it because the idea of interacting with a goddess
Game Green's primary weapon is a gun, though she typically acts as the team's mage and healer.Game Gold
Oh, it's just Nepgea-- Wait, what!?
Being the treacherous traitor that loves betrayal that she is, in a post-game scenario involving the Game Rangers, Nepgear will become inspired by the awesome suits of the Game Rangers and build herself power armor to match the five heroes. In order to gain respect from and impress her sister and the other CPUs, she tries to take over and reform the Game Rangers into proper heroes, but somehow she ends up being their maid just like she was Neptune's.
Once this scenario is completed, Nepgear will be able to use a few attacks involving her alter ego, Game Gold, but she won't have gained any respect... Though the Game Rangers do keep her on speed dial for when they need their armor fixed. Which she typically does for free.
T-That's kind of like respect, right?
That's all I've got for now. How'd I do?