I was gonna name them Echos or Lights Originally-

Okay so, I made them up for like two Stories (Three, If i think of a good plot for another Story)

Lichos show up in places filled with negative emotions (Example: Someone just died) though they tend to show up in dark places too.
They look like butterflys or flys.
They always show up in groups.

Lichos cant be touched. If anyone touches them, the Person gets teleported to the Void or they pass out.

In 'A Dream' they show up in a dark cave full of glowing flowers (Licho Flowers). They also show up around the Dream Valley Kingdom (Angel Kingdom).

In 'Everything Black' they fly around Clarity as She's just always feeling sad or mad.
The Butterfly ones land on her fur.
In this universe, the void doesnt exist. Clarity can see Ghosts because of the constant Contact to them.

When a Licho dies (They cant be killed usually, touching them results in passing out) they turn into a flower.

Thats all-

If You wanna use them in your stories just ask! I'll gladly let You use them! Just Credit me and ask before You do anything!