[Shin Henshin]

I think going so far as to say Geats' main characters are bad people is a bit much, personally.

Flawed, yes. Bad, no. They're human beings put into a scenario where they can essentially get the one thing they've been wanting. Trying to get ahead of the competition is gonna bring out their more selfish sides and spotlight their flaws.

Ace is a good person, but is egotistical.

Neon is a good person, but can be selfish.

Keiwa is a good person, but has a very black and white way of thinking.

Even Michinaga is a good person, but he's prideful to a fault.

They all show traits proving that while flawed, they're not evil or inherently bad. They're driven by their own personal lives and molded by their supporters in most cases. Beroba drives Michinaga to be more merciless because she loves suffering. Kekera drives Keiwa to be more vengeful because his ideal Kamen Rider isn't a white knight kind of person. Ziin drives Ace to be the protagonist who always wins because he doesn't want to see his fave lose. And Kyuun does what he can to drive Neon to be true to herself because he'd rather have her live happily than as someone she's not.