Who is Charon in Fallout 3?

Charon is a person that you can hire to follow you around and trade stuff with. You can find Charon at the Museum of History where the group of ghouls live. Go up the stairs on the left of the ghoul settlement and go into the door that says "The Ninth Circle". The "basic" way to gain him is by paying the store owner 2,000 caps for Charon's employmemt contract. This is a little pricey, but at least you do something in the game.