Sakuno Rondo is the powerful form [[theresa_apocalypse|Theresa]] assumes after combining with [[Yae Sakura]]'s power. Thus gaining Sakura's fox ears and general "miko" attire in the process.

A Magical Girl [[official alternate costume]] also exists, used both by the Theresa of the main [[Honkai Impact 3rd]] world and by the Magical Girl version of Theresa from the Magical Girl bubble world.