El Cero hasn’t always been this one-dimensional, predatory villain: he once was a doting older brother. His grief for his sister, however, changed him and turned him into the monster he is today. Camino doesn’t share how exactly Alejandro’s grief turned him into El Cero, but this offers a chilling warning as to what can happen when a person doesn’t address their grief. And in contrast, Camino lost both her friend and her mother, and she emerged from these losses with her humanity still intact.