Sonic The Hedgehog 2: What Is G.U.N.?

gamerant.com:

Sonic the Hedgehog 2 introduced a ton of new and fascinating details from the massive source material into the growing film universe, with varied results. While fans were thrilled to see Tails and Knuckles finally hit the big screen, some of the other reveals were a little more niche.

The second film in what is quickly shaping up to be a powerful new cinematic universe has thrilled longtime fans and newcomers alike. Throughout the film, the Blue Blur faces off against his classic nemesis Dr. Eggman and his new rival Knuckles the Echidna. But a new threat emerges from the darkness in the latter half of the film. Some spoilers follow for Sonic the Hedgehog 2, proceed with caution.

8 Unresolved Mysteries & Plot Holes Left Hanging In Sonic The Hedgehog 2

Sonic the Hedgehog tells the story of the beloved hedgehog embedding himself in human society and trying to escape the clutches of Dr. Robotnik. Robotnik is a government-funded mad scientist in the first film, but his selfish ambitions cause him to go rogue. The dynamic battles with Sonic immediately defy the hedgehog's intention to fly under the radar. With a massive event like the battle in Green Hills, mankind had to respond in a big way. After an alien being and a mad scientist clashed on Earth, nearly destroying a small town and crossing the globe in the process, the Earth responded by forming a new organization. The Guardian Units of Nations organized to handle the extradimensional affairs of Sonic and friends, and the grim work of Dr. Eggman.

G.U.N. was first introduced in 2001's Sonic Adventure 2, as an all-purpose enemy force. They quarrel with the good guys and the bad guys with seemingly equal gusto. All that's really known about them in their first appearance is that