Quiet, kind-hearted, and surprisingly brave. Sal is known for his calm nature, loyalty to his friends, and determination to uncover the truth behind every mystery. He has long light blue hair and a visible blue eye (his other eye is hidden beneath his hair). He wears a realistic prosthetic face mask that covers severe facial injuries from a childhood accident, making him instantly recognizable. He has a fat orange cat named Gizmo. Larry taught him how to play the guitar. He doesn't eat in the cafeteria to avoid having his mask removed. He has a crush on Guest.

Laid-back, funny, and fearless. Larry is the group's unofficial big brother, always ready to protect his friends. He has long, messy dark brown hair and brown eyes. Sal's best friend. He is good at drawing and playing the electric guitar, and is fond of rock and metal music. He is the tallest guy in the group.

Confident, outspoken, and independent. Ashley is brave enough to say what others won't. She has long brown hair and green eyes. She is good at drawing and she was the one who taught Larry to draw when they were young. She doesn't believe in ghosts, but her belief is slightly shaken by what they tell about strange things in Addison's apartments.

Intelligent, logical, and analytical. Todd relies on science and reason when solving problems. He has short brown hair and brown eyes, usually wearing glasses. He is more introverted. He prefers to be alone or with a small group of friends. He doesn't like noisy places.

Aggressive, defensive, and often hostile toward others, especially Sal. He has short blond hair and brown eyes, giving him the appearance of the stereotypical "perfect student" despite his rough attitude. His father is a priest, so he is always very strict about somethings and may bully other students who do something wrong in his opinion. He is homophobic. He doesn't like pizza. His favorite food is bologna.