Small description: Maybe he's not somepony who uses brute force to defend himself, but to accuse or exculpate someone, he was the first, thanks to the ability to make arguments that were very credible. After finishing school, he entered the university and studied law, when he graduated, he studied for a doctorate, and from that moment, every day he had law for breakfast, lunch, and dinner. Thanks to the fact that he defended many ponies on trial (and won almost all the trials), he was able to found "Brown and associates", having many workers (including lawyers) at his disposal.
About him: He doesn't work for the prison "Fat Rocks", only twice has he been able to defend those who were prosecuted there winning the trials (and earning money from them), so if you need your help for a trial, you'll need a considerable amount of money.