Valla ark is a Spartan Hunter who's first hunt was at Rally Point Omega on Reach ending his hunt with 28 Spartans down and he Carries the helmet of the strongest spartan he fought. After the Pillar of Autumn launched he raced to the nearest Phantom to Help in the pursuit and was thought to have met his end on the first halo but was later found alive on Genesis during the Guardian recalls and later escaped on a Phantom that followed a Guardian to the ring made by Anders and the Spirit of Fire (Current Status:UNKNOWN) so he somehow ends up in Halo 5 and Halo Wars 2 from Halo reach and Halo: CE