Sheerie Fairies are phosphorescent glimmers of light that move from cover to cover. They combine elements of fairy and human nature. It is thought that Sheerie Fairies are the souls of unbaptized children trying to gain entry to the mortal world.

Given this problem, they tend to be very jealous of and angry toward humans. This may be the reason that they are believed to be behind human misfortune.

These fairies can be found on land or water. For instance, the water types confuse humans into thinking bogs are safe when they are not (and other misfortunes associated with water). Land fairies do similar things to humans like getting them to wander off cliffs.

These fairies do not have the power of speech but do put out a mewling sort of sound. They can be warded off with iron, a crucifix, or holy water.