Mina Fayad is a H.I.V.E. agent and an antagonist in the fourth season of Arrow. She is the one who hired Deadshot to kill Andy Diggle.
Mina Fayad was a double agent undercover at A.R.G.U.S. transporting the Khushu Idol off of Lian Yu. Unbeknownst to Amanda Waller, Fayad gave the idol to Damien Darhk which gave him his magic powers.
When Deadshot is imprisoned, she reveals to him that her organisation posted his bail and recruits him for a one time mission.
Years later, she returns from Markovia to Starling City and meets with Damien Darhk. She introduces her associate Jeremy Tell whom Darhk hires to kill the Green Arrow. After Tell fails and Mina is almost compromised by John Diggle, the brother of Andrew Diggle, Damien executes Mina for her failure and as a lesson to Tell to never disappoint him again.
Her body is later left for the Green Arrow to find. Diggle is disappointed because she was his only lead for finding the murderer of his brother.