This is really helpful thread, I’ve just looked up Nintendo and this what it says on their site- so be careful with that one :-)
While we are grateful for all the requests for permission to use Nintendo properties, we are not able to grant such requests. We receive thousands of requests and we do not have adequate staffing to review them all. Therefore, our general policy is to decline requests for permission for the use of Nintendo properties.
Although we are not able to grant permission, use of Nintendo’s properties without formal permission by Nintendo may still be allowed under the relevant laws of the particular jurisdiction involved. Thus, we encourage you to seek your own legal counsel if you have any questions about whether your particular proposed use is permitted without Nintendo’s authorization. Nintendo cannot provide legal advice.
We appreciate your support.