Japanese title card · “The Scream of Perfect Chaos” | |
| Series | Sonic X (ソニックX), TMS Entertainment |
| Season | Season 2 (2003–2005) |
| Episode | Season 2, episode 6 · no. 32 of 78 |
| English title | “Flood Fight” (4Kids) |
| Japanese title | パーフェクトカオスの叫び (Pāfekuto Kaosu no Sakebi, “The Scream of Perfect Chaos”) |
| First aired (Japan) | 9 November 2003 · TV Tokyo |
| First aired (US) | 23 October 2004 · Fox Box / 4Kids TV (Fox) |
| Directed by | Nana Harada |
| Written by | Masahiko Shiraishi |
| Storyboard | Toshiki Hirano |
| Previous episode | Revenge of the Robot (S02E05) |
| Next episode | Project: Shadow (S02E07) |
Chaos Saga finaleSuper SonicPerfect Chaos
Flood Fight is episode 6 of Season 2 of Sonic X and the 32nd of the anime’s 78 episodes. In Japan it is called “The Scream of Perfect Chaos” (パーフェクトカオスの叫び). It premiered on TV Tokyo on 9 November 2003, and the 4Kids English version followed on Fox Box / 4Kids TV (Fox) on 23 October 2004. It was directed by Nana Harada and written by Masahiko Shiraishi.
Synopsis

Sonic and Tails find Eggman flat out in the Mystic Ruins: Chaos, he admits, has double-crossed him and wants the Emeralds’ power for itself. Before Knuckles can deal with the doctor, he and Sonic are pulled into a vision of the past – Chaos’s first appearance, and Tikal kneeling before the Master Emerald, pleading for help.
Chris, meanwhile, has been looking for Knuckles to hand over the white Chaos Emerald. He means well, but the gem completes the set: with all seven, Chaos becomes Perfect Chaos, a colossal water monster that floods and wrecks the heart of Station Square. Tikal’s spirit appears and explains that her sorrow had kept Chaos asleep until Eggman woke him.
Perfect Chaos spits out the Emeralds, drained of power, but the hopes of Sonic’s friends and the whole city bring them back to life, and Sonic turns Super. He shrugs off the monster’s attacks, shields his friends from its laser breath and plunges straight down its throat. Chaos shrinks back to its calm, small form, and as a group of Chao arrive, Tikal and Chaos fade away together, at peace.
Key Moments
- Perfect Chaos floods Station Square.
- Super Sonic returns, powered by the people’s feelings.
- Chaos and Tikal depart together.

Trivia
- Concludes the Sonic Adventure adaptation, which, like the game’s final story, ends with Super Sonic against Perfect Chaos in Station Square.
- On home video: Japanese DVD/VHS volume 8 (Victor Entertainment, 21 February 2004); 4Kids/FUNimation volume 7, Revenge of the Robot (14 June 2005); the Chaos & Shadow Sagas DVD set (2008); 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.

Japanese title card · “The Scream of Perfect Chaos”