Palvus

Parvus (パルバス) is a demon who took the appearance of a monkey. It is a companion of Leuvis and a minor antagonist in the Search For Minerva Arc.

History
Not much is known about Parvus' past, but it was shown in a flashback of Leuvis', where it was not wearing its crown and was revealed to have a second, much tinier eye right above its larger one.