Can shadow people turn into orbs of light? Or are they two different entities?
Shadow people are dark entities and manifest as dark energy or in the form of a dark mist. Orbs of light are more benign and are focused energies of the deceased. They are separate beings.
Which video game series are you referring to? Different universes have different rules. Even in Final Fantasy XIII, some shadow orbs simply fade away, while some shadow people are restored into the timeline.
I'm no expert on the subject but I think the shadows are all dark and emit no light whatsoever.besides glowing eyes which have been reported.