From the moment I adopted the Phantasm disguise, I knew I'd never have a normal life again. After avenging Dad, it was all I had to go back to. I passed myself off as Phantasm's go-in between, charging a fortune for "my client's" services as a spy, or a thief, or an enforcer. If the money was right, I'd take the job, no questions asked.
~ Andrea Beaumont about how she used her Phantasm identity as a means of employment.

Mercenaries are villains who are motivated primarily for monetary gain and will work for whoever (or whatever) pays them the most money. Some mercenaries have a code of honor, but most are guided by greed.