The Beast

Like in Nordic culture, where men became entranced and gained superhuman power by entering a rage called Berserker in the world of darkness all kindred suffer from this curse. The Beast is the true nature of a vampire, it is a savage rabid wild animal that has no compassion, feels no sorrow or mercy. In this state a kindred can kill either friend or foe, and break the codes of the masquerade for he is not in control of his actions, all kindred must keep the Beast at bay, under control or suffer the consequences of unleashing it unto the world, each act that the Beast takes will echo in you mind for the rest of your un-life, you must live with the consequences of killing allies, breaking camarilla codes, breaking the masquerade, committing of Diablerie and other heinous acts.

To control the Beast, kindred cling to their Humanity for its the last remnants of a human soul they had in life, but this is a loosing battle for every kindred for with the pass of centuries emotions as compassion, mercy, joy and all that made them human begging to fade also the wars that kindred wage between themselves and the greed of mortal men is also a reminder that Mercy is a weakness and wickedness is a virtue.
The Beast is unleashed by fear, pain, and hunger in kindred, a kindred that has not feed may be irritable and if he finds himself pressured or is attacked he must try to stay calm or go into a Frenzy, that is when the beast takes control and hell breaks loose. All kindred that frenzy gain incredible strength and resiliency but the draw back as mentioned is that a Frenzied vampire will attack anything it sees in sight, Animals, humans, kindred, friends or foe. There are other paths to contain the Beast with in, but that shall be another night.