 Japanese title card · “The Day of the Plantations” | |
| Series | Sonic X (ソニックX), TMS Entertainment |
| Season | Season 3 (2005–2006) |
| Episode | Season 3, episode 23 · no. 75 of 78 |
| English title | “Agent of Mischief” (4Kids) |
| Japanese title | 森化の日 (Shinka no Hi, “The Day of the Plantations”) |
| Japan | Not shown on Japanese TV until 27 April 2020 (Kids Station) |
| First aired (US) | 15 April 2006 · 4Kids TV (Fox) |
| Directed by | Masami Furukawa |
| Written by | Masahiko Shiraishi |
| Storyboard | Seiji Okuda |
| Previous episode | Eye Spy (S03E22) |
| Next episode | The Light in the Darkness (S03E24) |
Final battle, part 1
Agent of Mischief is episode 23 of Season 3 of Sonic X and the 75th of the anime’s 78 episodes. In Japan it is called “The Day of the Plantations” (森化の日). It premiered in English: 4Kids aired it on 4Kids TV (Fox) on 15 April 2006, after a French TV debut on 15 April 2005, while Japanese TV only showed it on 27 April 2020. It was directed by Masami Furukawa and written by Masahiko Shiraishi.
Synopsis
Bokkun plays the crew a message Eggman recorded as a Metarex battleship closed in on him: his enemies have rumbled him, and their whole fleet is massing at coordinates 000, where a thousand-year legend says night and day will become one. In true Bokkun style, the message then blows up the screen.
Tails reveals a hidden second bridge, and the battered Blue Typhoon lifts off from the planet Green Gate without Shadow – until the Chaotix offer him a ride and crash-land inside Dark Oak’s flagship. At 000 the crew takes on Black Narcissus and Pale Bayleaf, Chris frees the captive Eggman, and Dark Oak breaks up his own ship to stop Shadow.
Then the planet Aquarius appears and the “forestation” begins: fed by a Planet Egg and the seven Emeralds, Dark Oak, Narcissus and Bayleaf merge into a three-headed tree dragon, the Final Mova. It cripples the Blue Typhoon, and when Sonic refuses to join the Metarex, a geyser washes him down into the planet’s glowing waters.
Key Moments
- Eggman warns of a thousand-year prophecy.
- The Chaotix give Shadow a ride to the battle.
- Dark Oak, Narcissus and Bayleaf become the Final Mova.
Trivia
- Translations vary: our 2017 table rendered the Japanese title as “The Day of the Plantations”, while Wikipedia gives “The Day of the Forestations”.
- On home video: the So Long, Sonic DVD set (2007); and Discotek’s Sonic X Collection 2 (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 3 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.