Suzanna Maria Kempner was born in Haywards Heath, West Sussex, before the family moved to Surrey, where she attended Oakwood School, Horley.

[8] From February to March 2013, she appeared as Katisha in the Pulling Focus production of The Mikado at the Tabard Theatre in West London.

[10][11] In 2018, Kempner performed her sixth solo show, "Super Sonic 90s Kid", at the Edinburgh Festival.

In 2018, she performed in Doodle at the Waterloo East Theatre, The World Goes Round at the Stockwell Playhouse and as David Cameron in a new musical about Brexit by Richard Thomas and Jonny Woo.

[12][13] In March 2023, the BBC announced that Kempner would be featured as the title character in a Doctor Who multiplatform story, Doom’s Day, to be released later in the year.