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Express yourself on the battlefield.
— In-Game Description

This is the way is a Star Wars Series Emoticon in Fortnite: Battle Royale that could be unlocked by reaching Level 98 of the Chapter 2: Season 5 Battle Pass.

It shows the Mandalorian holding finger guns, with "Pew! Pew!" around him. It is called Mando, as that is a common shortened name used for the Mandalorian.