henchman
US /ˈhentʃ.mən/
UK /ˈhentʃ.mən/

1.
心腹, 爪牙, 党羽
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.
犯罪头目派他的心腹去收钱。
•
The dictator relied on his loyal henchmen to enforce his rule.
独裁者依靠他忠诚的爪牙来巩固统治。