Which Beyoncé alter ego is named in the title I Am... Sasha Fierce?

The alter ego named in Beyoncé’s album title I Am... Sasha Fierce is Sasha Fierce.

Beyoncé introduced the concept on her 2008 double album I Am... Sasha Fierce. The project was divided into two discs: I Am presented more personal and emotionally direct songs, while Sasha Fierce emphasized bold, performance-oriented material.

Beyoncé described Sasha Fierce as a stage persona that helped her become more uninhibited while performing. The idea became especially associated with songs such as “Single Ladies (Put a Ring on It)” and “Diva,” which appeared on the Sasha Fierce disc.

The name is not a separate recording artist or a legal identity. Beyoncé later said that she had retired the Sasha Fierce persona, explaining that she had reached a point where she no longer needed to separate her stage confidence from her everyday self.