Joshua (Vault City)

Joshua was an Outsider who was living in the Courtyards of Vault City with his wife and son. Shortly before the Chosen One arrived in the city for the first time, Joshua was drinking in Cassidy's bar when Citizen Sergeant Stark and his men arrived. Joshua was taken away for resisting apprehension and was going to spend the rest of his life as a servant in Vault City when the Chosen One freed him.

His wife, Amanda will ask you to free him. He is being held in the Servant Allocation Center. According to The Nearly Ultimate Fallout 2 Guide, there are four ways to free Joshua, each involves talking with Barkus. Either way, you get 500XP and $32 when talking to Joshua if the Courtyard (males can ask to sleep with her instead of money). He leaves the city afterwards and takes Amanda and Curtis (Fallout 2) with him too.
 * Bribe him. The amount depends on your Barter skill (between $250-$1000).
 * With either 80% Speech or 75% Doctor skill, you can make up a disease Joshua contracted.
 * With real citizenship and 75% Speech, you can tell Barkus to release him since he's a bad influence on the others.
 * If you are Captain of the Guard, simply order Barkus to let him go.