Berthier's only appearance in the musicals was in Tanjou! Ankoku no Princess Black Lady (Kaiteiban) - Wakusei Nemesis no Nazo, and she was played by Manami Wakayama. She was very similar to her manga counterpart, and introduced herself as a dowser. She was shown to be stronger than Sailor Mercury, whom she declared as a rival, but weaker than both Sailor Venus and her older sister Calaveras, which seemed to place her as the second strongest of the Ayakashi Sisters. She was eventually killed along with her sister Petz by Sailor Neptune's Deep Submerge.