"The Cosmo Conspiracy" is the the seventy-third episode of the anime series, Sonic X. It first aired on 13 April 2005 and 1 April 2006 in France and the United States respectively.
- "Gotta Go Fast" - Opening theme (USA and CAN)
- "Sonic X" - Opening theme (AUS, NZ and UK)
- "Gotta Go Fast" (shortened) - Closing theme
The episode begins with Sonic and his friends all getting ready for a rest. Tails tells Chris to go to bed whilst he tries to fix the security mainframe. Meanwhile, Shadow is seen running down a corridor towards Cosmo's room. The security system comes on just in time to reveal Shadow's presence. Chris arrives on the scene to have Shadow fire a Chaos Spear at him. At the last moment, Sonic rescues Chris and takes the blow. Before Shadow gets a chance to attack Cosmo, Sonic gets back up and gets into a scuffle with him. Sonic tells Tails to run away with Cosmo. As they get out of there, Sonic gets knocked to the ground by Shadow and passes out.
Amy and Cream take the injured Sonic and Chris to the hospital room, so they could be recovered faster. Tails realizes that Shadow has the technology to hack the security camera system, so he tries to shut it down. Shadow still hacks into it, but by the time he sets off, Tails is hidden with Cosmo inside the engine room. Just then, Knuckles breaks through everything he can find and confronts Shadow. Knuckles manages to knock Shadow into the wall, but gets distracted by a Chaos Spear and the appearance of Rouge. She tells Knuckles that Cosmo has sensors planted in her by the Metarex.
Meanwhile, Shadow locates Tails and Cosmo inside the X-Tornado and a battle ensues. Tails and Cosmo attempt to escape in the X Tornado. but Shadow stops it from taking off by severely damaging it. However, Tails and Cosmo escape again into the air duct. Shadow follows them, but Tails reaches the top first and hits the shut down button, temporarily trapping Shadow in there with the lasers. Before Tails can move a couple of feet though, Shadow spin dashes through the ceiling and prepares for an attack. Knuckles arrives and tries to stop Shadow, claiming he always wanted to shadow box. Knuckles gets beaten down by Shadow, but managed to stall him long enough for Tails and Cosmo to escape, and left with Rouge.
After running for a while longer, Tails and Cosmo are cornered in a dead end and Shadow insists that Tails gives him Cosmo, but he refuses and pulls a lever behind him that traps Shadow inside the Sonic Power Cannon. The hedgehog is shoot off into space, but reappears via Chaos Control of which the emerald disintegrates, revealing it to be a fake. Shadow claims he does not want to hurt Tails, then walks toward a terrified Cosmo, saying "All right, let's get this over with." As he is about to kill Cosmo, Tails tried to stop Shadow by grabbing his leg but is severely wounded. Then just as Shadow was about to use Chaos Spear on Cosmo and Tails, the Metarex appears and reveals to everyone that Cosmo is a spy, she has a codename White Seed and they monitor what she hears and sees through some kind of device implanted in her brain. Cosmo's amulet shines and she screams. A white light surrounds The Blue Typhoon, making it disappear, and the episode ends on a cliff hanger.
- When Cosmo gasps when Shadow approaches her, her eyelashes vanish for a few seconds.
- In the English dub, Tails says there is a problem with the security system. In the original, it was shut off by Tails for a few seconds.
- The scene where Chris launches the Emergency alert is changed. In the Japanese dub, he was sitting on a chair, but in the English dubbed, it is exchanged with a scene from "Trick Sand".
- In the original, Tails specifically mentions that there is an intruder in Zone 12, Cosmo's room. However, in the English dub, Tails just says there is an intruder on the ship, not specifically where.
- Shadow's first line is changed from "You will die!" to "You traitor!".
- Shadow originally did not call Tails by his name in the Japanese version.
- When Knuckles is fighting Shadow, Chaos' theme from Sonic Adventure plays.
- In the Japanese version, when Rouge appears behind Knuckles after Shadow busted a pipe and ran off, she says nothing. In the English dub, she says "Are all redheads as temperamental as you?" while her 4kids theme music plays.
- In the Japanese version, the voice of the computer Shadow accesses is female and soft on the ears. In the English dub, it is male, robot-like and hard on the ears.
- In the Japanese version, when the computer accesses the cameras, it said "Surveillance camera". In the English dub, it says "Bypass code Six-Delta-Three"
- There is a thirty-third second cut of Shadow getting weak and dropping to his hands, Rouge coming by and saying Knuckles managed to remove his Limiters, Shadow putting the rings back on, and walking to the door that Tails and Cosmo ran through.
- In the original and the French version, Shadow was forced into his spinball form inside the Sonic Power Cannon. In the English dub, he wanted to use the Spin Attack to escape the Sonic Power Cannon.
- In the Japanese version, after Shadow is fired from the Sonic Power Cannon, Knuckles notices that he is gone, while laying on the floor. The English dub inserts in this scene a shot where Knuckles is looking at his wristwatch with Cream.
- In the Japanese version, there is a scene where Rouge pulls the device Leon gave her out of her cleavage, leading to a flashback of when they found Leon in "Zelkova Strikes Back". There, Rouge and Shadow talk about the state of the planet they are on. As the flashback ends, Knuckles asks her why they are trying to kill Cosmo. This scene was removed in the English dub.
- All of Shadow's "punch marks" are removed in the English dub.
- In the Japanese version, there is a two-second shot of Cosmo's face during her flashback to when the Scarship attacks. That shot was removed in the English dub.
- In the Japanese version, Cosmo repeated "I don't want to die" when Shadow was coming towards her.
Title in other languages
|French||Qu'arrive-t-il à Shadow ?||What happens to Shadow?|
|German||Die Cosmo-Verschwörung||The Cosmo Conspiracy|
|Italian||Il tradimento di Cosmo||The Cosmo betrayal|
|Spanish||¡Shadow, el asesino!||Shadow, the murderer!|
- Tails wears a/an communicator/infrared scope similar to the one Sonic wears in "Sonic to the Rescue".
- This is the first time (in the English and Japanese versions) that Shadow is shown bleeding.
- This is the first of two episodes in which Shadow is shot out of the Sonic Power Cannon, the second being in "A Fearless Friend".