To this day, Nintendo has never revealed what Nabbit looks like under his mask, adding an air of mystery to the character.
If you are a gamer, this is almost certainly who you are looking for. Nabbit is a recurring anti-hero character in the Super Mario series, first introduced in New Super Mario Bros. U (2012). what is nabbit
Here is a useful breakdown of both so you can find the answer you are looking for. To this day, Nintendo has never revealed what
: He is primarily a thief who steals items from Toads. He often appears on the world map carrying a stolen sack; players can enter stages to chase and catch him to recover the items. Gameplay Mechanics U (2012)
Nabbit was a "read-it-later" service similar to apps like Pocket, Instapaper, or Pinterest. It allowed users to clip articles, videos, and web pages to save them for offline reading or organization.