Karl (Fallout 3)

Karl is a member of The Family in Fallout 3 in 2277. Karl doesn't believe in Vance's vampiric teachings, but plays the part in order to keep his store in the Meresti Metro Station.

Quests
Blood Ties: Investigate the people  behind the murdering of  Lucy West's family and the brahmin herd in Arefu.

Store

 * His store is open from 3 pm to 8 pm (unlike other stores, open approx. 8 am to 6 pm). He will sell to you at other times if you find him. He sometimes sells blood packs at the regular "junk item" price (base value 5), which can then be sold nearby to Vance for 15 caps (not subject to Barter). This is only possible if you have brokered a deal with Vance and Evan King of Arefu.
 * Karl also has one of the biggest merchant inventories in Capital Wasteland. His inventory is located in a freezer near his desk.
 * He stocks around twenty pieces of scrap metal at the start of the game.
 * Unlike anyone else, Karl never runs out of stimpaks to sell.