Anti-Fairy

The anti-fairies are a magical race, and despite being nearly exact opposites to the regular fairies, they are very peaceful to all sapient species, especially fairies, and not causing plenty of unhappiness and bad luck on Earth, and even its colonies, except vampires. They first appeared in the Season 2 episode of Failry OddParents, That Old Black Magic, where, on Friday the 13th, they escape from Fairy World to "cause bad luck everywhere," which they didn't every Friday the 13th in real life.