What is the name of Beyoncé’s alter ego introduced during the 2008 album era?

Beyoncé’s alter ego introduced during the 2008 album era was Sasha Fierce.

The persona appeared prominently with I Am... Sasha Fierce, Beyoncé’s third solo studio album, released in November 2008. The album was structured as two discs: I Am focused on more personal and reflective songs, while Sasha Fierce emphasized energetic performance and dance-oriented material.

Beyoncé described Sasha Fierce as a stage persona that helped her separate her private self from her more flamboyant performance identity. Songs associated with the era included “Single Ladies (Put a Ring on It),” “If I Were a Boy,” and “Halo.”

Beyoncé later said she had moved beyond the alter ego, explaining that Sasha Fierce had served its purpose. The name is therefore tied especially to the 2008 album cycle, rather than being her permanent professional name.