Sung's mother or close family member, likely connected to his emotional struggles and past trauma outside the immediate train crisis.
The household maid whose testimony initially points suspicion toward Wang Tian-You, supporting the prosecution's early theory before the truth emerges.
Mother is Rat's deceased mother. Rat recalls finding her decomposing corpse on the floor of her home after escaping from Ah Xiang. The film ends with a silhouette of Rat embracing her at the river bank, making her presence important to the story's final image and to Rat's memories.
Lü Hsueh-feng has 28 screen credits in a career dating back to 2010. Signature works include Synapses, Sampai Jumpa, Filial Piety Award. Explore the interactive character relationship maps on each title page to trace how their roles connect across franchises.