Brawl Stars gets a brand new brawler even before its official release
Piper is designed for long-range engagement, with her shots being most effective from far away. Her super ability makes Piper jump away from danger, while dropping grenades on her previous spot. It's basically designed to let her increase the distance between her and the enemy, and finish them off with long-range sniper shots.
According to TouchArcade, adding new brawlers for players to unlock will be Supercell's monetization method for the game. This means that it shouldn't feature any intrusive ads.
Things that are NOT allowed: