Once a frontline combatant in the devastating Omnic Crisis, Bastion has all but lost its combat programming and now explores its surroundings, fascinated by the world and its inhabitants.

Though Bastion's new nature is gentle, its core combat programming takes over when the unit senses danger, utilizing its entire arsenal to eliminate anything it perceives as a threat. This has led to instances of conflict with the few humans it has encountered, and it tries to avoid populated areas in favor of the wild, uncharted regions of the world