YMMV / The Black Hearts

• Complete Monster: Marcus Black was a soldier who chose the job for his love of killing. After being discharged for an assault on Vacuo, Marcus becomes an assassin for hire. He forces his son Mercury into the trade, putting him through brutal training and forcing him to kill people, also mistreating his wife Melanie. During a kill mission, Mercury notices the man has a child with him, and Marcus demands Mercury kill her. Marcus charges extra to torture the victims to death, like the way he laughingly recalls the death of Azura Michaels to her son Cobalt, who snaps and stabs his father Jaylin to death since the latter hired Marcus for the job. After Melanie leaves him, a fed-up Mercury tells Marcus how much he hates him, and Marcus attacks Mercury, planning to kill him "free of charge".
• Jerkass Woobie: As much of a sadistic sociopath that Mercury became on the show (and later in CRME), Looking at his home life in this story can't help but make you feel bad for him. His father is abusive to both him and his mother. And while his mother suffers the same abuse, she only responds by passing it along to him.