David's devoted son who researches and supports his father's hero identity.
Joseph supports David's pursuit of Kevin at the beginning of the film.
David and his son Joseph track Kevin to the abandoned factory.
Joseph exposes Elijah's hidden role in Kevin's history.
During the parking-lot confrontation, Joseph reveals that Kevin's father died in the train wreck Elijah caused.
They share the post-confrontation effort to reveal the truth.
Joseph and Casey each receive a copy of Elijah's secretly streamed surveillance footage and release it publicly.
Explore the full interactive character relationship map of Glass
Related entry on Wikidata (Q51886095), public domain (CC0).