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Archie Sonic X Issue 18 was the eighteenth issue of the spin-off Sonic X comic series.
- "Rouge Goes Rogue!"
At the Thorndyke Mansion, Sonic, Tails and Chris watch as Rouge steals the Moon emerald from the museum. Sonic believes that a fake is commiting crimes like Shadow did it with him. At G.U.N., Captain Westwood asks that Rouge should be arrested with Topaz defending Rouge. The President has no choice but to arrest her, but she has disappeared.
On Angel Island, Rouge wants to stay with Knuckles and offers to guard the Master Emerald. Rouge attacks Knuckles, Knuckles attempting to knock her out doesn't succeed and Rouge flies off with the Master Emerald. At G.U.N., Knuckles smashes through the window where Topaz and Sonic are wanting to see Rouge. Knuckles tells the that she's stolen the Master Emerald and Captain Westwood overhears that he now has to arrest Rouge. Sonic still not buying it recommends that they draw her out of hiding to prove she's innocent.
A week later, Westwood organises the opening of the World's largest Chaos Emerald found in Alaska. Topaz, Westwood, Sonic and Knuckles find Rouge flying overhead. While Westwood and Topaz argue, Knuckles glides up and confronts Rouge. Rouge claiming that there is a fake is thrown off with Knuckles off the roof. Westwood uses a net and grabs Sonic, Knuckles and Rouge. Topaz and Westwood don't notice the fake Rouge flying overhead and into the museum. Rouge uses her lazer lipstick to free them all, but Rouge is tackled into the building by Knuckles. Sonic, Knuckles, Rouge, Topaz and Westwood confront the fake, and the fake and Sonic are grabbed in a net by Westwood again. Doctor Eggman enters with a new robot and grabs the Chaos Emerald. Rouge releases Sonic and the fake from the net and tells Knuckles and Sonic to take care of Eggman while she takes care of the fake. Rouge successfully destroys the fake, and Sonic and Knuckles take out the body of the robot, where the Moon emerald and the Master Emerald are hidden in. Eggman flees the scene as the robot is destroyed.
Later, the President apologises to Rouge about not trusting her and gives her the "Chaos Emerald", which is really a cubic zirconium.
- Sonic makes a brief reference to the "Shadow saga" (episodes 33-38) of the Sonic X anime.
- The cover background is similar to the where Rouge steals the diamond in the musuem in the anime episode 11 "Fly Spy".