Chaos is represented best by technology and the living universe's dependency on technology.
If Chaos gets free he will go on a destructive path of working to kill the other gods of the balance and to make chaos a ruling class through the universe. To help him he has Warlords of Chaos that serve him toward his destructive ends.
Chaos cannot be harmed by anything from any technology. For that matter he can control any technology or machinery.
Links: True Gods