Shadow Guardians are energy beings that serve the Infinity Spirit, Darkness. They generally tend to the maintenance of the Physical Realm, and handle imbalances.

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Shadow Guardians will not incarnate within physical bodies. They have a specific form they generally take, and do not change their shape. They are unable to perceive colour and matter, and can be harmed by exposure to light, so they prefer to travel using the Shadow Dimension. Once a task is completed, their energy will be replenished, and they will be rewarded with a little bit extra.