Angels-IMPS

Imps are minor evil spirits, rather like infernal fairies. The word imp
originally meant shoot or bud, which conveys the impression of imps
as offshoots of Satan. Imps have also been described as the demonic
equivalent of guardian angels, tempting humans to evil acts rather
than inclining them to good deeds. Imps are errand boys who carry out
the bidding of their master, and were also traditionally thought to be
the familiars of witches.
In the words of one writer imps are “low-maintenance demons”
and can be kept just about anywhere. Usually tiny in size, some are
said to look like small people, others like moles or even toads. They
require some feeding, and need, in particular, blood.