impersonating

James Eagle made calls from inside a jail posing as a judge, authorities say. From jail, Eagle, allegedly made phone calls to the clerk of court's office in which he posed as Judge Richard Bernat.

Police say Nathan Loebe, after meeting a child actor who appeared on 'Family Ties, assumed his identity all in an effort to attract women and then sexually assault them.

A lighthearted comedy about a couple of regular guys impersonating cops Let's Be Cops (2014) - IMDb Just thought any cops would like a few laughs, :p