Would you like to see Captain Toad appear as a playable character inMario Kart 8? Well, Nintendo’s very own Koichi Hayashida wants him to star in the iconic racing series as well as other Nintendo titles. Interestingly, Hayashida has contacted the director of Mario Kart to see if he’d consider including Captain Toad in the game. Hayashida says he has become quite attached to the charming character and would like to see him feature in a “variety of games.”
"At this stage we don’t know. I personally want to see him featured in a variety of games. I’ve even ‘secretly’ emailed the director of Mario Kart to see if he’d consider including Captain Toad, but I haven’t heard back from him yet!"
http://mynintendonews.com/2015/02/22/nintendos-koichi-hayashida-wants-captain-toad-in-mario-kart/
If you're interested in Nintendo content and understand german, maybe you want to take a look at my youtube channel! :)