So, this is going to be a role-play of Mario Kart! You can choose any character from the series, and whether you want a kart or a bike. Every element from every game is allowed. Here is a list of available Characters in ABC order:
Baby Daisy
Baby Peach
Baby Rosalina
Birdo
Bowser
Bowser Jr.
Diddy Kong
Donkey Kong
Donkey Kong Jr.
Dry Bowser
Funky Kong
Honey Queen
Iggy
King Boo
Lakitu
Larry
Lemmy
Ludwig
Mario
Morton
Paratroopa
Pink Gold Peach
Petey Piranha
Princess Daisy
Princess Peach
Rosalina
Roy
Shy Guy
Toad
Toadette
Waluigi
Wendy
Wiggler
Yoshi
I chose Luigi with a bike. I'll edit the list when people pick a character.