Mercenary – More concerned about making money than doing the right thing
There's no mercy from this person who is so scary (mercenary) in battle. He'll fight for any side – making money is the only thing he's concerned about.
Examples of mercenary in a sentence
The angry husband hired a mercenary to kill his cheating wife.
He was a mercenary who had no ties, he simply worked for whoever paid the most.
The businessman was quite the mercenary, willing to take down any other businesses for financial gain.