not as black as (someone) is painted

Translations
(кто-то) не так плох, как его малюют
He’s really not as black as he’s painted once you get to know him.
Он действительно не так плох, как его малюют, когда узнаешь его поближе.
Definitions
This phrase means that someone is not as bad, evil, or unpleasant as they have been described or portrayed by others.