Society for Observing and Neutralizing Inter-dimensional Creatures and Xenomorphs

S.O.N.I.C.X. (The Society for Observing and Neutralizing Inter-dimensional Creatures and Xenomorphs) is a secret organization dedicated to destroying Sonic and his friends, due to Sonic (both directly and indirectly) ruining their lives in one way or another. They are led by the mysterious Organizer, who only appears to his comrades via video conferencing and is always obscured by shadows. It was Jerome Wise who thought up their expanded (and, in Sonic's opinion, ridiculous) name, having stayed up all night on the Internet in order to do so.

This organization did not appear in the Sonic X show, only appearing in the comic series of the same name. However, many of the organization's members appeared had small cameos in the anime.

Ironically, the acronym spells out the titular anime and comic series' name. Humorously, Sonic mocked them when he first met the group, believing them to be a fan club.

Members

 * Card Passer, head of C.L.I.P. (Covert Lateral International Program), a company related to G.U.N. which was charged with supplying weapons and covering some incidents from the general public. He was arrested for leading an unauthorized attack on Dr. Eggman during his truce with the President and then going against Sonic and his friends. (Sonic X, Episode 50)
 * Hector Dragg, Sam Speed's biggest rival and a member of Station Square's S-Team. He was considered the third fastest man alive after Sonic showed up, which caused him to become obsessed with defeating both the hedgehog and Sam in a race. He was fired by Sam Speed for becoming reckless to the point of hurting innocent people when trying to outdo both Sonic and Sam. (Sonic X, Episode 1)
 * Howard Watcher, a high-ranked warden of Prison Island. He lost credibility after Sonic broke out with Amy's help, and then his job when the Island was destroyed. (Sonic X, Episode 35)
 * Dr. Kai Narasu, a scientist who made a live announcement disregarding any possibilities of Sonic being a living being, considering him as a machine, instead. He was laughed at and fired by his own faculty when his theory was proven false. (Sonic X, Episode 2)
 * Li Yan, a street thug and leader of a gang of criminals called the "Bruiser Boys". He and his gang were defeated by Knuckles and Hawk after trying to steal a Chaos Emerald. He then joined the organization to punish Knuckles for humiliating him. (Sonic X, Episode 17)
 * Jerome Wise, the President's former (and first seen) aide. Tired of the constant battles between Sonic and Doctor Eggman, he made a deal with the doctor to get rid of Sonic so that peace could be restored. He was fired after the President discovered it. The loss of his job caused him to lose his home in the anime. (Sonic X, Episode 21)

Trivia

 * All of the six members were present in the Sonic X anime. Hector Dragg made a brief appearance in the first episode as a member of the High Speed Police, but he wasn't referred to by name or seen afterward.
 * Although it is not acknowledged, Li Yan's gang (The Bruiser Boys) seem to also be part of the group, but whether as official members or just associates is unclear.
 * It is also worth noticing that Yan is the only member whose revenge isn't directly towards Sonic, but rather his friend Knuckles.