Beyoncé used the stage persona Sasha Fierce for the performance-focused side of her 2008 album.
I Am... Sasha Fierce presented a contrast between Beyoncé’s more personal material and songs designed around an intensified onstage character. Beyoncé described Sasha Fierce as a persona that emerged when she performed, allowing her to be more daring and uninhibited.
The project’s “Sasha Fierce” disc included “Single Ladies (Put a Ring on It),” “Diva,” and “Video Phone.” These songs emphasized sharp choreography, theatrical presentation, and a confident vocal identity.
The name is not Beyoncé’s legal name or a separate artist. She later said she had retired the persona, explaining that she no longer needed to rely on a stage alter ego to access that confidence.