Zuka

Zuka Zammamee is a sangheili spec ops commander in Halo: The Flood

he is first talked about at the pillar of autumn when it was attacked while nearing halo, when a grunt named Yayap had rescued him from the ship, then he had taken Yayap in as his "partner". They both had been told of John-117 who they were assigned to kill, their first trap was as Masterchief had left the structure during the search for the map room, as it had failed, their next trap was druing the siege of the crashed down pillar of autumn, but while he wanted to stay and fight, yayap had lied to him and taken him to safety, he had been angry about this, about Yayap lying to him, and about not kiling MasterChief, the final trap was druing the Masterchief's escape from halo, in the elevator to the warthogs, him a squad of spec ops grunts tried to kill him, masterchief had been shot, but threw a frag grenade and had killed him.

you can see him during the part before "warning, hitchhikers may be escaping convicts" at the elevator.