Karen is a highly-regarded dwarven blacksmith in Emon. As an NPC, she is played by Matthew Mercer.
Karen is a very sturdy, muscular dwarven woman, with graying hair pulled back into a tight bun. She has a bit of scruff on her chin.
When Vex'ahlia asked Karen to step outside her shop, the blacksmith became wary and mentioned having a few "encounters" in the past.
Vex'ahlia commissioned Karen to create custom armor for Trinket made from the carapace of a bulette.
Tiberius commissioned Karen to create a five-pointed throwing weapon.
Scanlan commissioned Karen to create seven chainmail chokers.
Karen always seems keen to build the odd and eccentric machinations of Vox Machina, as it provides a challenge and they usually provide the materials necessary from their own supplies.