Devil
Devils are vicious creatures who are capable of attacking and killing others for essentially no reason. However, they hate being the target of misery themselves. This leads to another trait of devils, their extreme vindictiveness combined with a lack of ability to accept their mistakes. Devils have an instinct to look for others to blame when they suffer setbacks and have the drive to exact vengeance against whomever they hold responsible, even when they are demoted to a weaker station. For example, the grandson or granddaughter of a dead being who was indirectly involved in the demotion of devil was an eligible target for the demoted devil, even after it managed to be re-promoted.
Devils often delegate their work to others. This does not mean that they are lazy, however, as the primary personality trait for any devil is ambition. They constantly look for ways for promotion. The goal behind this behavior is the fulfillment of the devil's own desires. They try to rise up the hierarchy to modify rules in ways that suite them. This is the root of their dedication to the cause of lawful evil.
These fiends have some tendency to act on emotion, especially when faced with the prospect of vengeance, and with enough provocation, can be made to act in ways that are detrimental to their ultimate goal, up to death in pursuit of such vengeance.
Genetic Descendants