Maria Maria serves as a supporting character. She lives independently in a settlement, focused on agriculture and caring for orphaned children. Her core philosophy champions non-violence and peaceful coexistence, leading her to reject retaliation against harassment or attacks; this absolute pacifism stands out as unusual within the setting.

A pivotal moment occurs when antagonist Gavlet Gablae, affiliated with Timp Sharon, destroys Maria Maria's fields and threatens the children. Despite her principles, the crisis compels her to act physically, striking Gavlet with a rock to protect herself and the orphans. This act causes her significant distress, representing a profound violation of her beliefs. Following the incident, she cuts her hair as a gesture of apology and acknowledgment of her lapse.

Later, Maria Maria joins the crew of the landship Iron Gear, becoming involved in the conflict against the Innocent faction, though her specific role aboard isn't detailed. Her commitment to non-violence faces constant challenge amid the warfare.

During the final assault on the Innocent stronghold (X Point), Maria Maria participates in the battle aboard the Iron Gear. Amidst the chaos and missile explosions, she suffers permanent blindness after looking directly at a detonation.

An alternate continuity within the compilation film *Xabungle Graffiti* alters the ending, depicting Maria Maria's blindness as treatable using Innocent technology, restoring her sight. This film does not revisit her philosophical stance or development.