Casei Solus (pronounced /kaz'eː·i.'soː·lus/) was a Human politician on Eriadu. She was the leader of Arrain Makila, a pro-Republic political party on Eriadu, and chief political rival of the Humanocentric despot B'Rhea. Following the dissolution of the Eriaudan parliament, she became the leader of an underground espionage movement that sought to have its own counter-revolution. To culminate the end of the B'Rhea-led Mint Revolution, Solus was captured and executed by the despot at the suggestion of Mra Tarkin.