The specific behaviors, levels (up to 50), and move priorities learned through training.

Amiibo chips can die. If your Level 50, tournament-winning Link suddenly stops scanning, a properly backed-up bin file allows you to restore that exact fighter to a new blank NFC tag. Without the bin, those 50 hours of training are gone forever.

Here is where we must be brutally honest. The search for "Super Smash Bros Amiibo Bin Files" exists in a gray zone.

If you download a bin file from the internet, you will likely get a . This is a Level 1, untrained, fresh-out-of-the-box figure. When you scan it, the Switch sees a new, unowned Amiibo.

If you own the figure, dump it. Backup your Level 50 main. That is smart. If you don't own the figure? The bin file will work on your Switch, but you will know you are playing in the digital shadows.