I'm doing Render Unto Caesar and Benny says if I bring him a stealth boy and a bobby pin he can escape. What happens if I do this? It wasn't mentioned in the Wiki.

Ave, true to Caesar.

You never see him again and I'm fairly sure all of the Legion attacks you as soon as he leaves the tent.

Fixed. Unless you plan on betraying the legion I wouldn't recommend freeing him. Even if you use a stealth boy the legion will kill Benny with one punch and then come after you.

He joins an Alien squad, later coming back and cutting off your testicles to later sell them to House.