Byleth is a playable character. The Garreg Mach Monastery DLC stage is based on this game. Edelgard, Petra, Dorothea, Dimitri, Ingrid, Dedue, Claude, Hilda, Lorenz, Rhea, Flayn, and Seteth appear on the stage. Sothis appears in Byleth's Final Smash and as a spirit. Music from the game is also included in the DLC.