These are the names of the "release groups" or encoders responsible for capturing, converting, and uploading the file to the internet. Episode Context: "Mother"
The show title ( Helix ), Season 2, Episode 10 (titled "Mother"). Watch Helix S02E10 INTERNAL HDTV XviD-AFG-[GTtvSD]
A tag used by scene groups to indicate the release might not meet certain standard "scene rules" or is a secondary release for a specific reason. These are the names of the "release groups"