Group Liaison

The "Man on the Phone" as referred by Accelerator, was the one who always give instructions to GROUP.

Background
Not much is known about him aside from the fact that he is from the dark side of Academy City and the one who gives jobs to GROUP as requested by the higher ups.

Skill-Out Uprising

 * Main article:Skill-Out Uprising

Due to Academy City currently fortifying its anti-Roman Catholic battle lines, the defense on the inside has gotten thinner. GROUP was given a job by the "Man on the Phone" as requested by the Academy City Board of Directors to do a clean sweep of a force that is going to use that gap in the defenses to do some damage to the functionality of Academy City.

Battle Royale Arc

 * Main article:Battle Royale Arc

Accelerator attempted to contact Anti-Skill to ask information about the satellite that is under electronic attack but the "Man on the Phone" who usually gives instructions to GROUP interrupted so Accelerator asked him instead.