I have my own take on Sprites. My Sprites are the scariest of the Fae, whilst they can love, they are more often malevolent and vindictive, and, whilst bound by obscure rules of honour and accountability, are usually entirely unfathomable, and totally unpredictable. If they decide they like you, either instantly, or because you do something they respect, they will love and protect you as long as you (not they, they live for ever) live. If they take a dislike to you, you are, basically, screwed. Sprites are vastly stronger than humans and all other Fae, and they are virtually un-killable. They also access the deepest, strongest, darkest Fae magic… in fact, Sprite magic is a thing above Fae magic, a thing all other Fae have absolute respect for. If you meet one in a forest, you must turn and walk away, do not listen to any promise they make, do not look back… if you are lucky, they will respect your obvious appreciation of your worthlessness, and not decide to play with you. You would not survive their playing.