Halo 5: Guardians Customs & Matchmaking Finder in Halo General Discussion Posted September 7, 2016 Pretty much everything arenaGT: Crewman XEast Coast:Looking for people to play with on Slayer and Team Arena. I believe i'm a solid onyx who really wants to surround himself within a solid group of people who believe in having fun and calling out. I'm a little competitive, but it's healthy. I promise! haha.