The Valen Expansion is an NPC mod built upon, and inspired by Wes Weimer's Valen NPC mod. It aims to build upon the roleplaying potential and overall fun of having Bodhi's vampire servant as an NPC. There will be a romance, and it is a potentially important part of how she develops throughout the game. However, the player is not required to pursue the romance in order to fully experience Valen.

What began as a simple project to add more dialog to the Valen NPC mod has grown into a mod containing new encounters, items, powers, and character options for everybody's favourite vampire NPC.