Friday

 is a Slaver added to Fallout 3 in the add-on The Pitt. She is a merchant and can repair your gear, in the year 2277.

Daily Schedule
She can be found in Downtown after the battles in The Hole have been completed. Go up the stairs by Midea's house and run across the planks. She's generally located right above Kai.

Interactions
She'll sell you any weapon she has after you complete the battle in The Hole.

Appearances
appears only in the Fallout 3 add-on The Pitt.