Imps are an Umia of Mischief spirits that occult scholars have assigned sub classifications to based on behavior.
Bogarts – Dangerous spirits of mischief and nature.
Boggle – Once mischievous spirits of the home, the Boggle now haunt many office spaces. They cause chaos, lose paperwork and steal pens. Most offices have 1 or 2.
Gravelings – Mischief spirits that cause violent accidents that often lead to death.
Gremlins – Mischief spirits that like to cause technology to fail.
Osogbo – Normally solitary spirits that attach themselves to individuals, and they cause them to experience trials. Less violent then their brethren, they feed off people experience triumph as well as misfortune.