Leopold Ross is an English musician, producer, engineer, and composer known for his work with several rock bands and for scoring films and television productions, sometimes in collaboration with his brother, Oscar-winning composer Atticus Ross. Leopold is known for the atmospheric use of electronics in his music for 2016's Almost Holy and Triple 9, and he would later add organic elements to complement the digital surfaces in 2022's The Girl from Plainville and 2023's Monarch: Legacy of Monsters.