Jericho is a resident of Megaton in Fallout 3. He was once a Raider in the Wasteland. With the right words and 1000 caps, you can convince him to join your cause and travel with you. Keep in mind though, he won't join you if your karma is too high, he likes to get his hands dirty.
Jericho is one of the many characters in Fallout 3 that spew out foul language at every given moment. This may be due to the fact that he used to be a raider. When you first meet him he says he quit being a raider because of the "horrors of the wasteland", but in reality it was because he was considered too old to join any raider factions.
When hostile NPC's come near Megaton, Stockholm and Jericho are in charge of fending them off.
- If cigarettes are placed in Jericho's inventory, he may smoke when he's standing still.