In a gang/mafia movie:

The boss: Leo

The actual secret boss: Capricorn

The only person who knows the real boss: Scorpio

The aggressive bodyguard: Aries

The one who wants to overthrow or snitch out the boss: Virgo

The loyal members: Sagittarius, Taurus

The cops that end up changing sides: Gemini, Libra

The girl the boss protects, who the cop falls in love with: Pisces, Cancer

The FBI boss who stops trusting the cop: Aquarius