Does someone know how to do this?

[Amore]

I was doing salmon run, and met this random awesome looking name.
I really wanna try this by myself, but had no luck with it.

 

[Wosie]

Whoa, that looks really interesting, I've never seen anything like it before...! If there were hacks for the Switch, I'd assume the name was hacked, but as it isn't possible yet... Maybe it has to do with the new update? Or some kind of glitch?

 

[MindWanderer]

Yeah, it's a hack. They haven't cracked the Switch wide open yet, but they have managed to edit Mii names to add unenterable characters like squids and carriage returns.