So, in my head there is a magical land where all fangame characters make crazy stuff together. I was actually going to write about it but since the fic itself was getting too serious to put all the gag-ish stuff, I kinda gave up writing and let my mind go wild with them. Thanks to that I have a personality for the characters that's very different from what most people believe and, in some cases, is very different from the creator's view. Since we now have a general thread I'll post it here. But I'll warn you, it's a long list of characters and it's probably not worth reading.
Madotsuki (YN): She's a very serene girl. Not easy to amuse, not easy to scare, not easy to get any emotion out of her. Very balanced. She's pretty much the guide and veteran to the other characters.
Poniko and Uboa (YN): They're not main characters but they show up constantly. Poniko is a very tsundere (wat) girl that wants everyone to believe she hates them and she doesn't like to keep company. Uboa, on the other side, is outgoing and clingy; It's usually found holding Alex's ankle.
Urotsuki (.2kki): Mostly cheerful and fun-loving, but gets mad very easily. Frequently goes on rampages. Also very frequently drunk.
Sabitsuki (.flow): Quiet and serious. Very geeky, gets excited when talking about technology and computers in general. Also somewhere in my head she talks to Okamitsuki on Skype.
Usotsuki (Nisshi): She doesn't really like getting too close to people, and gets very rage-y when there's too much people around. Which is the case mosf of the time. She's also a sadist.
Alex (Inspiration): My initial vision of him was of a very smart person, the big brother of the group, always calming down everyone. But Amoyu's (romanization might be wrong) fanarts made Alex become a guy who gets despeare too easily to be actually reliable for something. He's drawing most of the time, and carries a sketchbook and his beloved pencil everywhere.
Kazenori (Solitude): The only thing that can describe him is "HAPPY HAPPY JOY JOY CAFFEINE STARLIGHT ENJOY LIFE". He's extremely hyper and cheerful no matter what happens to him and he deeply cares for his friends. He's also usually mistaken for a girl.
Jade (Hostage Diary?): Very rude, self-centered and demanding. She absolutely hates kids, and thus hates almost everyone she'll ever get to meet. Even though Oni said she's very quiet I always picture her as a loud girl who speaks everything that's in her mind no matter how offending it is.
Aya (Hallucigenia): It's hard to talk about her because I see her as a completely silent girl/boy/genderless whatever. She changes completely according to the effect. Purple is a cheerful guy, Black is a serious adult male, Red is creeeeeeeepy, etc.
Asura (Nightmare): It's a bit strange to make an alternate personality of my own character but whatever. She cares about nothing that's going on around her and states that everyone else is too crazy for her. Except she goes crazy constantly, having no idea of what "personal space" means, always getting way too close to everyone, and trolling around.
Kazaguruma (Kudaranu): I'm not sure what the rest of the fandom thinks, but for me he's a boy. A huge trap, but a boy. He's Kazenori's BFF, being cheerful like him, but not as loud and hyper. He's also a bit airheaded.
Jose (Kudaranu): GARtender. Manly, I-don't-fucking-care on the outside, but deep inside he's just as cute as a little girl. He cares for people younger than him (mostly everyone). He also found out about Kazaguruma's gender in the worst way possible; looking under his skirt. But even with that people still won't question his manliness.
Irotsuki (Dreamarbleng?): Alex's self-proclaimed best friend and (also self-proclaimed) apprentice, even though she works with a brush and not a pencil. Can't do anything by herself; she always needs help to do everything, including painting.
Okamitsuki (Okumu Denwa): I haven't really thought about him for long, but he believes he's been raised by wolves. Very talkative.
Zi (Somnia): He's kind of a solidified shadow, able to morph his body in many ways, and copying someone else's shape, while still looking like a shadow. He smiles constantly and the only thing he's able to say is "Zi", making him hard to understand.
So uuh, there are characters I didn't list here because there's nothing relevant to say about them. My mind world is already too crowded with my 987427874327 original characters and there's not a definitive personality for all of the fangame characters.
tl;dr everyone's a big happy family inside a fangirl's head