Pins are decorative stickers that can be used in the chat.
Pins have no usage during the battles. They can only be used on the team or friendly game chat as emotes.
Pins can be obtained on deals, packs, or on Brawl Pass.
There are 4 rarity types: neutral, common, rare, and epic. Neutral Pins are "neutral" emote of every Brawler. Every Brawler you unlock comes with a neutral pin for free. All others must be purchased with Gems or obtained on Brawl Pass.