What name did Beyoncé use for the artistic alter ego linked to her 2008 album?

Beyoncé used the name Sasha Fierce for the artistic alter ego linked to her 2008 album.

I Am... Sasha Fierce, Beyoncé’s third solo studio album, was released in November 2008. The album was structured as two discs: I Am... presented more personal and introspective songs, while Sasha Fierce represented a bolder, more performance-oriented persona. Beyoncé described Sasha Fierce as a stage alter ego that helped her access confidence during performances.

The album included major singles such as “If I Were a Boy,” “Single Ladies (Put a Ring on It),” and “Halo.” In later interviews, Beyoncé said she no longer needed to rely on the alter ego because she had integrated the qualities associated with it into her own identity. Sasha Fierce is therefore not a separate singer or band; it is the persona named in the album title and associated with part of that project’s concept.