Spartan-084
From Halopedia, the Halo wiki
Summary
One of the original group of Spartans, Fhajad suffered from complications relating to the enhancement surgeries the other SPARTANS underwent, and was delegated to a desk job with ONI. However, he eventually attained the rank of Lieutennant Commander and published a paper on slipstream physics that allowed UNSC personnel to detect an incoming coventant fleet to Sigma Octanus IV.
Note: On the title of the paper, Fhajad is referred to as "Fhajad-034". However, this is impossible because at this point on the book, SPARTAN-034 has been clearly defined as Samuel-034. Therefore we must assume that this is a typo on the account of the author. The number closest resembling the incorrect 3 is 8, so it has been widely accepted that Fhajad is in fact, Spartan-084.
