This was brought to me over the question: Why do the changelings feed off of emotions and stuff? The original deceptive predatory nature of the Changeling seemed pointless when the Changelings could have just integrated themselves with the pony society. It's such predatory nature that is the reason why they were feared by ponies in the first place.
Changelings weren't always, well, Changelings. They were originally known as "Love Bugs," living in conjunction with the ponies. They lo
