In the 1929 film Pandora’s Box, Lulu is introduced as a dancer. Louise Brooks plays the character in G. W. Pabst’s adaptation of Frank Wedekind’s Lulu plays.
Lulu’s performance career is part of her public identity and helps establish the film’s themes of attraction, performance, and social judgment. Her relationships with powerful men propel the plot, but the opening characterization presents her as a dancer rather than as a journalist or singer.
The role is sometimes described more generally as a performer, which can create ambiguity in short summaries. “Dancer” is the specific profession used for this question and is the clearest canonical answer for her introduction.
The film’s portrayal of Lulu also reflects the tensions of late-1920s European cinema. It was controversial in its day and later became celebrated for its style and for Brooks’s distinctive portrayal.