What stage name describes Beyoncé’s performance alter ego?

Sasha Fierce is the name Beyoncé used for her performance alter ego.

She described Sasha as a more confident, sensual, and uninhibited persona that emerged when she performed. The concept became especially visible with the 2008 double album I Am... Sasha Fierce, whose two discs contrasted introspective songs with more energetic and stage-oriented material.

The album’s title and presentation helped Beyoncé distinguish private emotion from her public performance identity. Songs associated with the Sasha Fierce side include “Single Ladies (Put a Ring on It)” and “Diva,” while the I Am side included ballads such as “If I Were a Boy” and “Halo.”

People sometimes use “Queen B” or “Yoncé” as if either were the formal name of this alter ego. Those expressions are nicknames or artistic names connected with Beyoncé, but Sasha Fierce is the specific persona named in the album title and her interviews about performance.