sentences:  Demons, in the "Reaper" universe, are portrayed as seemingly neutral and non-aggressive (so far) entities who are either in the direct service of the Devil or plotting to overthrow his rule.It was stated that all demons were once angels who "fell" out of their place after joining up with the Devil's attempt to overthrow God and got banished along with him from Heaven.Demons residing within the mortal realm exhibit the ability to assume near-human forms that enable them to live along with real humans, with the only thing distinguishing them from actual mortals (besides their immortality) being two small horns protruding from their foreheads which can be sanded down to create the complete illusion that they are human; they are also capable of morphing into their true demonic forms, as displayed by Tony, which seem to grant an incredible boost of physical power in the process, and also flight with demonic wings.