The Makers are a race of Old Ones neutral to the conflict between the Angels and Demons as they built cities for both Heaven, Hell, and Earthland. 

They even helped Sparda created and forged the Devil Arms, that includes the Rebellion, the Yamato, and the Devil Sword Sparda. 

Ulthane: 

Elder Eideard: 

Alya: 

Thane: 

Muria: 

Karn: 

Valus: 

The Mad Smith: