Saul Blume

Saul Blume is one of the aliases used by the doppleganger member of the Ring of Thornes. He is a master of disguise and has impersonated dozens of identities including Unibrow, the goliath king of Isla Oja, and Heinrich Mendle, an ISB field agent.
Saul's parents were instigators during the early Scales of War period and helped Sarshan secure access to the Mountainroot temple by infiltrating Overlook's clergy, city council and prominent members. Saul's parents were killed by the alchemist Andronius and Saul spent the next five years on the run.
Saul has built up an immunity to Andronius' Anti-Doppleganger Elixir so that he does not revert to his true form.