Miguel's older brother, who is never present in the current narrative but is pivotal in shaping Miguel's character through memories of their complex relationship. Known for his charm and being his grandparents' favorite, Diego plays an integral role in the plot and Miguel's emotional turmoil.

A fellow resident at the group home known for his violent and angry demeanor, possessing a physically intimidating presence due to his scars and shaved head. Intelligent and perceptive, Mong leads an escape plan and reveals deep philosophical insights.

A large African-American teen with a religious bent, introduced with an aggressive start but develops a bond with Miguel despite initial differences. Functionally illiterate and raised in harmful environments, Rondell is loyal and protective in nature.

A street-smart and beautiful college student who helps Miguel, Rondell, and Mong during their escape, fully aware they are not on a sanctioned outing. She inspires Miguel's admiration and shares her personal story with romantic and pragmatic traits.

A charming Mexican girl Miguel encounters and quickly grows fond of during a journey in southern California. Their brief connection brings Miguel some personal insights though it ends abruptly with a revealing incident.

An idealistic counselor at the group home who tries to form bonds with the residents by addressing them informally. Despite being indirectly wronged by Miguel, he remains instrumental in Miguel's search for belonging and self-worth.

An older Jamaican man who initially transports Miguel to the group home and later appears in an authoritative role in the facility. He maintains a professional presence and is involved in the logistical operations of the group home.