Chaos is a Soul Demon. Much like Water, Light etc. It moves through this relm and many others. In our relm we can easily control it at will if it has chosen us. But in the otherworld... it can persuade us.
Chaos is not evil. But tends to want to control others. Ironic Isn't it? Creatures of Chaos keep their mind to themselves and only reveal information if they have a point. Sometimes they seem untrustworthy.