Talk:Magic/@comment-25491360-20141010161803/@comment-6986530-20141011061958

In both those cases, the demon was forced into its host by a third party (Abyss IR or Prim.) You'll notice that Kyle, while possessed by Lust, doesn't have any of Venomania's abilities that we're aware of. So it seems a demon can possess a human without lending them their power, just influencing their personality.