While not quite nintendocore, Monomate is the successor of iamerror, or rather a spin-off album that was created by a dude named Pete Bunke.
I think that was his name anyway.
Sadly he no longer makes music, or if he does i havent even found it yet.
Well anyway i chipped a tooth while i was uploading this so a few more to go then its off to the fucking dentist for me.