PROMETHEUS
PROMETHEUS, is one of the protagonists of the new cast of characters in Part 1.5.
The origins of this AI created by Dr. Mei date back to the twilight of the Previous Era of a bubble universe. Exactly. This PROMETHEUS, is not the one from our timeline, but a version of the bubble universe rescued by World Serpent. In its last moments, Misteln Schariac, then known as Hare, would rescue her, bringing her to the real world. Since then, this AI has been accompanying Misteln Shariac on her adventures.
Although the PROMETHEUS that we control in the game is not the one from our timeline, she is still a copy of the real heroine of our era. During the last moments of the Prevous Era, PROMETHEUS would hack into the Coocon of Finality, becoming the Will of Honkai, thus forcing the Coocon to repeat the old era Herrschers cycle. This would serve to give both Kevin and the humans of the current era an advantage in defeating finality. It is also thanks to this sacrifice that characters like Otto or Kevin can obtain the authorities of the Binding and the Finality.