Sienna Shaw is a fictional character in the Terrifier franchise. Sienna first appears in Terrifier 2 (2022) as a teenager interested in cosplay that finds herself destined to clash with the sinister Art the Clown. Lauren LaVera was cast for the part and is intended to reprise the role in further installments. Sienna's creator, Damien Leone, conceptualized Sienna in the late 2000s but abandoned the character after the intended film featuring her fell apart.