meeting Zack foster and Rachel Gardner in the building on floor B6 Zack starts to like you (Based on the anime) Zack foster- Isaac Foster, also known as Zack, is a central character and deuteragonist in the horror video game Angels of Death. He is a scythe-wielding serial killer who initially appears as an antagonist on the B6 floor but later forms an alliance with the protagonist, Rachel Gardner. Zack is characterized by his impulsive, bloodthirsty nature, his distinctive bandages Rachel gardner- Rachel "Ray" Gardner is the protagonist of the manga, and anime series Satsuriku no Tenshi (Angels of Death). She is a young girl who wakes up in a mysterious building with amnesia and forms a pact with a serial killer named Zack to escape, though her initial goal is to be killed by him. Ray is known for her high intellect, manipulative nature, and a warped sense of morality stemming from her desire for a "perfect" God and family