Stephen A. Chang is an American actor, screenwriter, and producer. He is best known for his role as Maurice "Mo" Bassi in the Amazon Prime series Bosch: Legacy (2022–2025), where he appears in 30 episodes.  He also portrays Jesse, the noble character in the video game The Last of Us: Part II (2020), and Sebastian Wu, the antagonistic lead in the Emmy and Peabody-winning Twitch original series Artificial (2019–2021). 

Chang has a diverse acting career, with appearances in television series such as This Is Us, Shameless, Hawaii Five-0, and NCIS: Los Angeles. He is also involved in creative projects beyond acting, including writing whimsical children's books and producing short films. He is a dedicated father of five children, whose imaginations inspire his storytelling. 

He is active on social media, notably on Instagram (@changxberger), where he shares insights into his work and personal life. As of 2025, he is also set to appear in the upcoming video game Intergalactic: The Heretic Prophet, scheduled for release in 2027.