Headscratchers / Mario Kart Tour

• How exactly is it determined which characters get which special items? For instance, most of the gold characters have Coin Box which makes sense given that it sprays out coins. However, Giant Banana can be acquired by characters such as White Tanooki Mario and Rosalina (Pastry Chef) when it seems like it should be exclusive to Donkey Kong and Shy Guy (Gold), Peach (Yukata) and Cat Luigi can get the Giga Bob-Omb which is the exclusive territory of King Bob-Omb.