Do your homework, OP. This interpretation of cutesy Tinkerbell fairies is a very recent one, popularised by mass media. In folklore, fae tend to be much more sinister. Changelings are fairies. Banshees are fairies. The Nuckelavee is a fairy.
"Fairies are wonderful. They provoke wonder.
Fairies are marvellous. They cause marvels.
Fairies are fantastic. They create fantasies.
Fairies are glamorous. They project glamour.
Fairies are enchanting. They weave enchantment.
Fairies are terrific. They beget terror.
The thing about words is that meanings can twist just like a snake, and if you want to find snakes look for them behind words that have changed their meaning.
No one ever said fairies are nice.
Fairies are bad."