There are folktales about the
sidhe (pronounced "shee"),
which are categorical and therefore inaccurate, nevertheless,
the "seelie" are generally loving, whereas,
the "unseelie" are more likely harmful;
the "trooping" are likely to be encountered as a procession of seelie fae,
the "solitary" are likely to be protective of their sanctuary from any intrusion, fae or [mankind].
The Urban Dictionary's definition of
Seelie is rather unique and differs from most folktales:
An extremely sexy and sensual girl. She's intelligent and amazing. Very good in bed, she can make you scream like no other. She'll change your world to make it better. She loves music and receives peace from lyrics and melodies. Her love's exceptional. She may not show it, but she is a super loving and passionate fae. Sometimes she isn't the best fae in the world but she can make it up. You'll never be bored with Seelie. Take care of her.
Q:
What type of fairy are you?
A: "You are A Crystal Fairy!
You are rather sassy, and cute.
You can be really nice, but if someone messes with you, they'll be sorry.
You are the sweetest little fairy, until someone messes with you.
You don't like it when people mess with your friends, or your things.
You wear magnificent colors like gold, and pink.
You usually have puffy pink hair like cotton-candy.
You have pink skin and pinkish eyes.
Overall, you are really cute,
and [others] drool all over you, (not literally).
You always have a [lover]!
However, you're really discerning,
so they always act nice, just for you!
[...]"