henchman

US /ˈhentʃ.mən/
UK /ˈhentʃ.mən/
"henchman" picture
1.

a trusted follower, supporter, or assistant, especially one who performs unpleasant, illegal, or violent tasks for a powerful person

:
The crime boss sent his henchman to collect the money.
The dictator relied on his loyal henchmen to enforce his rule.