Rouges, Bandits, Barbarians and Outcasts

Rouges
Rouges are dragons that were born and raised outside the territories of the different species of dragons. They have little to no knowledge of them other than that they're hostile, and exist. These dragons can also form little packs in which they migrate from place to place to survive. The alpha decides where to go, and the beta leads the hunting.

Bandits
Bandits are outcasts that belong to a group of dragons who despise the dragon species, whether they were born in their territory or not. They often steal and try to kill dragons within their territories. They try to find an unclaimed piece of land and take it as their own, and kill anyone who dare steps on it.

Barbarians/Brutes
Barbarians are dragons that live in solitary and are considered brutish. They'll kill and eat whatever prey they find, even if that prey is a dragon. They tend to be strong and battle-scared. Barbarians are often called brutes for their destructive and aggressive nature.

Outcasts/Outlaws
Outcasts are also called outlaws for their rule-defying/rule-breaking nature, and were born within the territories of their dragon species but where shunned for some reason. They tend to not trifle with these dragons, out of fear that someone will either recognize them, kill them, or both.