e.g. The village head became mercenary and he no longer cared for the villagers.
e.g. The businessman became a mercenary, and he encouraged unethical practices in order to maximize profits.
e.g. The dictator hired a mercenary to assassinate the neighboring country's leader.
"A true warrior can only serve others, not himself.... When you become a mercenary, you're just a bully with a gun." -- Evan Wright
Company