Mark is a round-faced, fair-skinned young man with fluffy brown hair and brown eyes. He is seen wearing a gray hoodie over a black T-shirt with blue jeans. Mark is an overly paranoid, possibly traumatized individual. Having encountered 6 at a very early age may have left an impact on Mark growing up, as can be seen in Exhibition. Mark has some sort of fear of the Torres household for unknown reasons, whether due to an experience or simply his exaggerated paranoia is unknown. Mark was an average 14 year old. His interactions with Cesar showed he was concerned for his friends and family. He appeared to be paranoid about going over to Cesar's house. During the entire confrontation with Cesar, Mark managed to last three days inside his bedroom, showing that he has mental fortitude. Mark only snapped when Cesar presumably revealed the truth: Christianity's saying about Christ was a lie and humanity had been fooled from the very start. This leads him to having a mental breakdown, and shooting himself. He survived this, though.

Cesar Torres was a 14 year-old, fair-skinned young man with mid length black hair, seen wearing a black tuxedo with a red bowtie, white undershirt, and a rose attached to the left. His mother is dead because he killed her. Cesar is Hispanic. He is very deceitful. He is an Alternate. His newest victim is Mark. The real Cesar is dead. He calls Mark 'scared boy with a gun.' The Alternates are sinister and enigmatic beings. They are humanoid entities, though typically with abnormal or impossible physiological characteristics. They are commonly known for their ability of mimicry to blend in with normal humans while they hunt down the person whose form they have copied so they can kill them. Once they have found and cornered their victim, Alternates will use psychological warfare to convince that person to commit suicide; their methods of doing so are unclear thus far, but it’s implied that by speaking to their victims in a certain tone or about certain topics. They have also been shown to use violence to kill as well.