Not everybody likes to play the big villain, kid. I'm a thief. I'm not threatening your precious city, just looking out for number one.
~ Red X.
Villains whose approximate Character Alignment is Chaotic Neutral, known as the "Free Spirit" alignment. Chaotic Neutral characters are wild, unpredictable, and often follow their own personal code without a care for others (though they may sometimes care about others); they are often selfish and the only thing predictable about them is their unpredictable nature.

This is the alignment of rogues, slackers, anti-villains/anti-heroes (when not Chaotic Good or Lawful Neutral), the mad (when not Chaotic Evil), as well as characters who do not follow normal ethical codes but do not actively seek to destroy the natural order either (as a Chaotic Evil character would).

It is important to note that none of these characters qualify as Pure Evil, as this is a neutral alignment (if they do, they're either Chaotic Evil or Neutral Evil). In fact, most of Chaotic Neutral characters are amoral and Anti-Villains.

Chaotic Neutral - Heroes Wiki