Sinara

Sinara is a character on the ABC series, Agents of S.H.I.E.L.D.. She is a female Kree in the year 2091 that serves as Kasius' second-in-command, enforcer, and head of the Kree Watch. She wields floating spheres which she uses to either attack her enemies or kill anyone that has offended Kasius. She makes her first appearance in

History
After most of Phil Coulson's group fled to the remains of Earth, Kasius sent Sinara to dispose of them.