Five Characteristics of a Warrior

Responsible
Committed
Unbounded Focused Energy
Compassion
Humility

Responsible
A warrior always fights for a cause, if he/she fights for a selfish reason then he ceases to be a warrior can either be called a predator or a hunter. So therefore on the shoulder of a warrior rests a great responsibility. A warrior usually fights for a right cause, the one who fights for a wrong cause again ceases to be a warrior and is called fanatic.

Committed
A warrior always has to be committed, say In the middle of a fight one would never say "Oh!! my shoulders are paining and I shall rest a while".

Unbounded Focused Energy
A warrior need to be high on prana and it needs to be without bounds(fear, lethargy, entanglements, etc).

Compassionate
Compassion is what makes a warrior, a warrior without compassion is not a warrior and is again just a murderer/butcher/robber. Though compassion must never be mistaken for foolishness, if someone is putting your loved ones or you under a life threatening situation then you can't just let him go, he needs to be captured, bound or even annihilated.

Humility
True sign of strength is humility. A tree loaded with fruits bends. Just bowing down out of fear is called submitting and bowing down because one is strong, self respecting and up righteous is called humility.