Ra's Mercy

Ra's Mercy (died 48 BCE) was member of the Phylakes who patrolled the Faiyum region, with orders to hunt down and eliminate the Medjay, Bayek.

Bayek eventually killed him and took his unique set of dual blades as well as an ornamented key, in 48 BCE.

Reference

 * Assassin's Creed: Origins --Phylakes' Prey