|This article, Karl Avery, was written by RelentlessRecusant. Please do not edit this fiction without the writer's permission.|
- "Get down, bitch."
- ―Karl Avery to Kimberly Ivy Blackburn
Karl Avery was a serviceman of the UNSC Marine Corps and the UNSC Special Operations Command.
By 2559, he would be a Staff Sergeant (E-5) and an Orbital Drop Shock Trooper (ODST) special warfare operator and would be the leader of Squad Five, Gauntlet Company, 2nd Orbital Special Warfare Battalion.