Stephen Loftus
From Halopedia, the Halo wiki
Stephen Loftus is a scale-modeling hobbyist known for his detailed work on scale comparison on the Halo universe. He assisted 343 Industries in the production of Halo: The Essential Visual Guide. He goes by the username "SoundEffect" on halo.bungie.org.
Background
Loftus has been into scale modeling since 1985, focusing on ships and objects from sci-fi medium such as Star Trek, Star Wars and Gundam.[1] He founded and maintained the Maritime Science Fiction Modelers, a website formed in 1993 that is dedicated for sci-fi scale-modeling hobbyist, as a result of his invested interest in scale-modeling.
Since the release of Halo: Combat Evolved, Loftus has been producing detailed analysis on the Halo universe, focusing on the technical specifications of the technology, ships and weapons.