Shuichi - surprisingly calmly until he starts the third lap. Then all Hell lets loose.
Kaede - trying to calm down everyone else.
Himiko - using excuses like 'my mp is down so I can't concentrate'.
Maki - 'If I'm being forced to play by you idiots I'm going to win.' If she loses she will pick up the closest thing to her and lunge it out of the window.
Kaito - it's all fun and games until he plays on rainbow road. He'd be cursing up a storm and almost always come in twelfth place.
Rantaro - would usually chill and not take anything too seriously. His sisters always fought over Mario Kart so he just kept his mouth shut and played.
Tenko - from the second the game starts she will be distracting people by kicking them and constantly looking for Himiko's approval when she (occasionally) got first.
Korekiyo - would watch everyone play and help Kirumi with snacks. He'd be confused (but fascinated // borderline obsessed) with how involved most of his friends were getting.
Kirumi - would sometimes play but would suck really bad, so she just made snacks and watched as her companions ravenously tore whatever she made apart.
Ryoma - Ryoma is the king at this game. He get's first place in rainbow road without fail and often helps Kirumi whenever he can.
Angie - 'You little shits want to play against me? Atua is on my mind, Atua-damned idiot!' She'd be surprisingly violent but kept a smile on her face all the time.
Miu - would be the guy who blue shells you seconds away from winning. She'd want to win so viciously mostly just to screw with everyone. She'd curse a lot, of course.
Gonta - 'Gonta is gentleman. Gonta will wait at the start lime for all of you to finish!'
Kokichi - This little child would be a lot like Miu with less cursing. He'd contsantly screw with Gonta and even got him to red-shell Ryoma (after persuading the bug boi to actually race them) but Hoshi still won.
Kiibo - would be very calm. He'd only get fired up if Kokichi teased //accused Kiibo of hacking the game with his 'robot-powers'. Then Kiibo'd be a scarily defensive mess.
Tsumugi - would always come sixth and get extremely unlucky when it came to mystery boxes. She rarely got agressive, just internally frustrated that she was losing control.
Word count - 396.