enforcer

/EH0 N F AO1 R S ER0/
noun
  1. 1

    One who enforces.

  2. 2

    The member of a group, especially of a gang, charged with keeping dissident members obedient.

  3. 3

    A player tasked with physically intimidating or confronting the opposition.

Synonyms

Source: https://en.wiktionary.org/wiki/enforcer