A bully employed as a thug or bodyguard:
— The drug lord had his muscleman to protect him.

synonym: muscle.

Dutch: krachtmens, krachtpatser, ribbemoos

Someone who does special exercises to develop a brawny musculature.

synonyms: bodybuilder, muscle-builder, muscle builder, musclebuilder.

Dutch: body-builder, bodybuilder
Polish: kulturysta