Aria, like Impa, Frederick, Shadow Link, and Shadow Zelda, cannot be played in Story Mode, Octavo's Ode, or Symphony of the Mask. Aria cannot acquire new weapons beyond her initial Dagger, and has a permanent half a heart container of health, making any enemy attack fatal. Furthermore, Aria takes damage when she misses a beat, making her the most difficult character in the game.
- In music, an aria is a solo vocalist piece.
- Aria, Cadence, and Frederick originate from Brace Yourself Games' original Crypt of the NecroDancer game.