Named after the notorious Marvel Comics supervillain, kingpinning is the act of methodically leveraging observations and social interactions for personal gain.
BenjaminLinus from LOST was a master of kingpinning; he could find out what a person was emotionally invested in and exploit it.
Someone who is addicted to obtaining money and building wealth. A money addict and fanatic. Breadheads often work more than one full-time job, and some even participate in illicit activities to "obtain the bread".