What was Beyoncé’s alter ego called during her 2008 double-album era?

Beyoncé’s alter ego during her 2008 double-album era was Sasha Fierce.

I Am... Sasha Fierce was Beyoncé’s third solo studio album, released in November 2008. It was structured as two discs: I Am..., described as focusing more on personal and emotional material, and Sasha Fierce, built around a more confident performance persona. The title connected the album to Beyoncé’s explanation that Sasha was an onstage alter ego.

The album produced major singles including “If I Were a Boy,” “Single Ladies (Put a Ring on It),” “Halo,” and “Diva.” “Single Ladies” became especially associated with its energetic choreography and black-and-white music video.

Sasha Fierce is often confused with later names Beyoncé used in songs or fan culture, including “Yoncé” and “Queen Bey.” Those terms are not the title of the 2008 persona. I Am... Sasha Fierce became one of Beyoncé’s most commercially successful releases and won six Grammy Awards at the 52nd ceremony in 2010, a record for a female artist in one night at that time.