A depressed, unemployed writer and Len's husband, struggling with life direction and confessing to his sister that he took his wife for granted. He debates suicide with Mia but ultimately advocates for survival and rebuilding civilization.
Married partners facing mutual dissatisfaction and marital crisis.
Siblings sharing personal struggles and relying on familial trust.
Indirect social connection through Sarah and Len, linking their survival paths.
Explore the full interactive character relationship map of Parts Per Billion