John (Fallout 4)

John is a hair stylist/barber who resides in the Diamond City market along with his mother, Cathy in Fallout 4.

Background
John lives with his mother at the Kathy & John's Super Salon at the Diamond City Market. He is a very large hair enthusiast as can be observed from his constant haggling. He is also very confident with the way he looks and can probably be compared to the typical "High-school Jock".

John is a special vendor because he provides the player character with hair customization for a charge of 15 caps a session. The Sole Survivor can change their hairstyle and hair color.

Appearances
John appears only in Fallout 4.

Behind the scenes
This NPC appears to be a reference to John Cena and the WWE Superslam, hence his shop, "Super Salon."