What was the name of Beyoncé’s alter ego used during her early solo era?

Beyoncé’s alter ego during her early solo era was Sasha Fierce.

She introduced the persona as a stage-focused counterpart to her more private self. Sasha Fierce represented the confident, highly theatrical side of Beyoncé’s performances, especially in songs and choreography requiring an assertive, larger-than-life presence.

The name became especially prominent with the 2008 double album I Am... Sasha Fierce. The project divided its concept between “I Am,” associated with more personal ballads, and “Sasha Fierce,” associated with uptempo, performance-driven material. Songs such as “Single Ladies (Put a Ring on It)” belong to the latter side.

Beyoncé later said that she no longer needed the alter ego because she had integrated those qualities into her own identity. “Queen B” is a common nickname for Beyoncé, but it is not the specific alter ego represented by the 2008 album title.