Marty is real but Nintendo did not make him he's a fan character mainly the "Green Thwhomp" in Bowsers Castle in Mario Kart 64 he is in a cage (probably because he was too aggressive to be an obstacle in the race track or something) he makes a very weird face and Nintendo confirmed "Marty is not real he is a fan made fictional character" nobody knows where the name Marty generated for this green thwhomp or who first said it but he has been made playable once in Mario Kart 64 through a character texture hack so he is playable via cheats as is "Crash" too via texture hack so if you find the code then yes he is technically unlockable so look around in the internet you may be lucky to find the code (sorry for the long answer)
there is no marty.
No.
Magikoopa was going to be in Mario Kart 64, but he was cut out of the final version and was replaced by DK.
Yes, Mario Kart 64 is for the Nintendo 64
Mario Kart 64.
no, only mario kart 7 does
you can get R.O.B. but not R.O.B. 64 in Mario kart ds
yes]
Mario Kart 64 - 1996 VG is rated/received certificates of: USA:E
Mario kart
If you go to http://uk.ign.com/cheats/games/mario-kart-64-n64-502 you will find all the cheats!
I think it was Super Mario 64 or Mario Kart 64
unfortunately not. the popular video on youtube turned out to be fake. it is virtually impossible to get up those stairs anyways.