“Tell your master that we will not follow him. Nor will we serve Death, Darkness, or Calamity. We obey only Chaos.”
“He can certainly try. Light cannot sway us, Nature cannot contain us. What hope does he have to tame us?”
Chaos Pit is his own faction. He could easily decide to side with Hades to cause more destruction, but he doesn’t. Part of it is a natural hatred of the gods, but most of it is actually leftover resentment from Pit.
Palutena and Viridi have teamed up to try and catch him, but he’s quick and sometimes feral. None of their troops can get close without getting taken out by a charge shot.
Dark Pit is a special case. The main reason Chaos Pit leaves him alive is because he’s a great plaything. He’s resilient, scrappy, and determined, all the key components of a good toy in the Chaos Kin’s book.
DP knows the real reason though, he can feel it every time he’s fighting them. Pit doesn’t want to kill him. He knows Palutena can revive her army, he’s never really cared for Viridi’s troops, and he hates the underworld troops with a passion. Dark Pit? That’s his brother! And nobody would revive him if he died.
So it’s Chaos Pit against the world. Well, he hasn’t fought any humans yet. They’re boring compared to monsters and dark angels. He does steal from them and cause property damage though, if only to sustain his vessel and draw Palutena’s attention.