Westwood and along with the President, Topaz and Rouge were notified of a secret room built under Station Square and believed to have some ties to Dr. Eggman. Both Topaz and Rouge were assigned to investigate the matter much to Westwood's disappointment, as he felt he is being left out from the more exciting missions and believes this is due to Rouge being Topaz's partner. An idea then struck him in having Sonic the Hedgehog as his partner and uses a new report of an unidentified object buried in the desert to enlist Sonic's help. After enlisting Sonic, Westwood tries to persuade Sonic into joining G.U.N. However, Sonic reply to Westwood that he doesn't mind helping out sometimes, and pointing out that joining G.U.N. would also means abandoning his time with Chris Thorndyke. The two eventually discover the object to be a large robot, which activates instantly. Westwood immediately sees this as another chance to become the number one agent and wants Sonic to keep the robot intact before telling him of reconsidering his offer. But Sonic realizes that Westwood had been lying to him the entire time, bury the robot where it came from and tells Westwood he'll never work with someone he can't trust; in which Sonic runs off before telling Westwood to get a hide from his friends, if he has any. (SX: #7)
Afterward, Westwood was upset from his predicament with Sonic and blames the hedgehog, along with Topaz and Rouge, for his problems. Upon learning Topaz and Rouge were on a mission in Paris in searching for Dr. Eggman, Westwood was determined to prove that Topaz and Rouge are bad agents. Westwood attempts to command Topaz and Rouge to return to G.U.N. after failing to find Eggman in order make them look incompetent in the eyes of the President; however, the G.U.N. agents ignored Westwood's orders. (SX: #8, #9)
Sometime later, the robot that was founded by Westwood and Sonic was taken to Area 99. There, Westwood escorted Tails to study the robot while boasting in taking credit for the robot's discovery instead of Sonic. While Tails uses his technology skills to enter the robot's cockpit, Westwood plots to use the robot to his advantage to discredit Rouge and Topaz. Unfortunately, his plan was dashed as the robot suddenly went on a rampage and both Westwood and Tails were entrapped inside the machine. Westwood and Tails were later freed by Sonic and Sam Speed, but the robot's rampage left Station Square damaged from its assault. The incident left the impression that both Sonic and Tails were responsible for the attack. Westwood then immediately takes advantage of the situation by branding Sonic and Tails to be working for Dr. Eggman by claiming that both of them built the robot and attacked Station Square. Sonic and Tails were arrested, but soon eventually cleared of the misunderstanding. (SX: #12, #13, #14)
Westwood came to the suspicion of Rouge for the series of crimes that she appears to be committing and demands for her arrest. He along with Topaz, Sonic, and Knuckles orchestrated a trap for Rouge in the opening of the world's largest Chaos Emerald found in Alaska. Rouge is then capture in a net gun used by Westwood. However, it then reveals that the crimes are actually being committed by a facsimile resembling to Rouge created by Dr. Eggman. A battle then ensues between Eggman and the Rouge facsimile and the G.U.N. agents, Sonic and Knuckles, in which the facsimile is destroyed and the retrieval of the Moon emerald and Master Emerald previously stolen by Eggman. (SX: #18)
- Captain Westwood only appeared briefly in the Sonic X anime series, where he was simply referred to as "the commander".
- Had the Sonic X comic series continued, Westwood would have been revealed as the mysterious organiser behind the S.O.N.I.C.X. organisation. This fact was already relatively obvious in the comic as the organisers silhouette heavily resembled him, not to mention the antagonism he'd expressed towards Sonic and his friends throughout the comic.