Sea Fairy

Sea Fairies are a species of tiny humanoid creatures with butterfly wings, which fly above the Sea of Demons of planet Etheria and emit a luminous glow.

Biology
Not much is known about their biology, as only one was shown. Though what is known is they are roughly three to four inches in length, have humanoid bodies, hair, butterfly wings and emit light. The only known specimen seemed to be female, but it's currently unclarified whether or not they are all female. They don't seem to have much in terms of physical strength, as the one that Princess Adora caught between her hands could barely put up a fight to break out and was only able to escape when she freed it. Of course, what else could one expect from such a puny and delicate creature?

History
One appears next to Sea Hawk when he relates his freedom to it, but then Adora clasps it to explain that he'll never truly be free as long as he serves the Horde, as they can easily take it away from him anytime they want, just as she was able to do with the sea fairy.

Appearances

 * She-Ra: Princess of Power, s01e07, "The Sea Hawk" (1985)