 Japanese title card · “Chaotix Detective Agency” | |
| Series | Sonic X (ソニックX), TMS Entertainment |
| Season | Season 2 (2003–2005) |
| Episode | Season 2, episode 13 · no. 39 of 78 |
| English title | “Defective Detectives” (4Kids) |
| Japanese title | カオティクス探偵事務所 (Kaotikusu Tantei Jimusho, “Chaotix Detective Agency”) |
| First aired (Japan) | 28 December 2003 · TV Tokyo |
| First aired (US) | 11 December 2004 · Fox Box / 4Kids TV (Fox) |
| Directed by | Makoto Moriwaki |
| Written by | Yoshio Urasawa |
| Storyboard | Hajime Kamegaki |
| Previous episode | Showdown in Space (S02E12) |
| Next episode | Sunblock Solution (S02E14) |
Egg MoonChaotix debutVanilla
Defective Detectives is episode 13 of Season 2 of Sonic X and the 39th of the anime’s 78 episodes. In Japan it is called “Chaotix Detective Agency” (カオティクス探偵事務所). It premiered on TV Tokyo on 28 December 2003, and the 4Kids English version followed on Fox Box / 4Kids TV (Fox) on 11 December 2004. It was directed by Makoto Moriwaki and written by Yoshio Urasawa.
Synopsis
The Chaos Control on the ARK has pulled more of Sonic’s world to Earth, Flickies included, and the President asks Chuck for advice – which worries Chris, who fears the government may yet take Sonic away. Knuckles shares the doubt: one minute humans love the newcomers for being unique, he grumbles to Rouge, the next they want them locked up.
Among the new arrivals is the Chaotix Detective Agency – Vector the Crocodile, Espio the Chameleon and Charmy Bee – on a job for a mysterious client. Spotting Sonic in a newspaper, they follow the trail to the Thorndyke mansion, and after a mix-up over who is a kidnapper the client steps forward: Vanilla the Rabbit, Cream’s mother. Cream runs into her arms, and Vanilla thanks everyone for looking after her.
Eggman, watching from his Egg Mobile, has plans of his own. He tells the President he has turned over a new leaf and, to make amends for the Eclipse Cannon, rebuilds the Moon’s missing half in metal: the Egg Moon. Even Sonic is assured that it is genuine. It isn’t.
Key Moments
- Vector, Espio and Charmy – the Chaotix – arrive on Earth.
- Cream is reunited with her mother, Vanilla.
- Eggman rebuilds the Moon as the Egg Moon.
Trivia
- The Chaotix trio had just been brought back for Sonic Heroes (2003).
- The last episode with “Hikaru Michi” as the Japanese ending; “T.O.P” by KP takes over from episode 40.
- On home video: Japanese DVD/VHS volume 10 (Victor Entertainment, 21 April 2004); 4Kids/FUNimation volume 9, Into the Darkness (7 February 2006); the The Egg Moon, Emerl & Homebound Sagas DVD set (2009); and Discotek’s Sonic X Collection 1 (2016) and complete-series Blu-rays.
Watch the Episode
The full 4Kids English episode, uploaded by TMS Entertainment’s official “Anime! on TMS” YouTube channel (checked 6 November 2026).
Part of our Sonic X Season 2 guide. See the Sonic X series page for the cast, theme songs and home video.
Sources: titles, credits and air dates from Wikipedia’s list of Sonic X episodes and Sonic Wiki Zone, cross-checked with each other and with Luke’s original Sonic Scene episode table; synopsis written for Sonic Scene from the episode, Wikipedia’s summary and Sonic Wiki Zone’s plot notes; title card and screenshots via Sonic Wiki Zone, copied to our media library.