Sumanguru was a Sobornost Founder who acted as an investigator and enforcer. He appears as a black man with a shaved head and facial scarring.
At the age of eleven Sumanguru escaped a black box upload camp. He later grew up to be a Fedorovist leader in an unnamed Central African country.
A gogol of Sumanguru was trapped in a Schrodinger box. Jean le Flambeur broke into the box and copied Sumanguru's Founder codes in order to impersonate him on Earth, as a means of obtaining a gogol of Matjek Chen.