Siffrin is described as scrawny, with white skin and short, wavy hair that is mainly white, but goes to black towards the back ends, and is messy from not brushing often. He wears a big white pointy hat with a very wide brim, and a large white cloak with visible frizzes and 2 safety pins below the collar. Their left eye is covered by a black eyepatch, and they wear short black gloves and black pants.

He wields a double-edged dagger with a significant curve, almost appearing like a short sickle.