Watch Movies2Watch. Principal Boy follows the audition, rehearsal, and performance of the central character in British pantomime, known as the ‘principal boy’. Traditionally a young male protagonist, the character is conventionally played by a woman in drag. Using and subverting traditional British pantomime conventions, Principal Boy explores the presence and absence of trans and gender-nonconforming people in mainstream culture, including film and stage productions.⁠ ⁠