Two Battleborn characters, Miko and Thorn, are going to make an appearance in Rock Band 4. This was announced at Gearbox Software's panel at PAX East. The company has unveiled the image above and shared that more info will come soon. This is not the first crossover promotion for Rock Band 4. Previously, Harmonix, the team behind Rock Band, teamed up with Bethesda to introduce Vault Suit and Pip-Boy to the game.