spin doctor
US /ˈspɪn ˌdɑk.tər/
UK /ˈspɪn ˌdɑk.tər/

1.
a person responsible for presenting to the public a favorable interpretation of actions or events, typically on behalf of a political party or prominent individual
:
•
The politician hired a spin doctor to improve his public image.
•
Her job as a spin doctor involves managing media perceptions.