change agent
Noun
Meaning
change agent (plural change agents)
(business) A consultant hired to assist with implementing changes in an organization's structure or operations.
Synonyms
Examples
Death is very likely the single best invention of life. It is life's change agent. It clears out the old to make way for the new.
The cool part about working for Disney is that they've allowed me to be a change agent.
Governments cannot make marriages or turn feckless individuals into responsible citizens. That needs another kind of change agent.