Bio-System Organisms are small lifeforms that have symbiotic properties. Used as tools, these non-sentient lifeforms can be attached to an individual, thus providing them with the means to survive in environments that would otherwise be toxic to them. The Omega Men frequently employed these lifeforms when journeying to planets with non-breathable atmospheres. During the Citadel War, the Omegan known as Tigorr was charged with retrieving a supply of Bio-System Organisms on the planet of Changralyn.
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