Medarot Damashii
Medarot Damashii (knows as "season 3", Medabot Spirits and Medabots Spirits in English) is an anime series and the sequel to the original Medarot anime. The series was produced by Trans Arts with assistance from wikipedia:Production I.G and started airing on TV Tokyo on July 7, 2000. As with the original series, it licensed by Nelvana for its western localization and aired as a third season of the anime outside Japan.
The series brings in elements from Medarot 3 and Medarot 4, such as the concepts of Medachange and some of the Medarot designs from these installments. The story has Ikki and Metabee (in a new body) taking a stand against Kokuryuu Kamizake, who wants to replace every Medarots with emotionless Death Medarots.
Due to its writing, loose continuity with its prdecessor, subject matter, and animation, the series is highly controversial with fans of its predecessor and the Medarot franchise at large.
"Does the soul of a Medarotter burn within you?" - Tagline
--Official Japanese website
Sypnosis
Sometimes after the events of the previous series, Ikki meets Nae, a kind and skilled Medarot mechanic who gifts him a new Medarotch model and upgraded Saikachis parts for Metabee. Ikki's world is upended when is he targeted by Ginkai, a sadistic and cheating Medarotter who uses Death Medarots. The Death medarots are a new type of medarot who lack emotions and individual personalities due to their generic medals, and who obey orders without questions, including those that ignore the rules of Robattle. The distribution of the Death Medarots is spearheaded by one Kokuryuu Kamizake, a callous young boy who wants to replace the Medarots with Death Medarots.
Due to their reputation, Kokuryuu hatchs various plots to discredit Ikki and Metabee and destroy Metabee. Further complicating this situations is the arrival of the Mysterious Medarotter, a skilled individual who is on a quest to destroy all Death Medarots, but whose ruthless methods makes him little better than the Death Medarots he claims to despise.
As the series progresses, various twists and turns upend the conflict. After repeatedly antagonizing Ikki and Metabee, Ginkai renews with his long-buried sense of honor and changes side, dedicating himself to becoming an exemplary Medarotter with his medarot partner Arcbeetle-Dash. The Mysterious Medarotter is revealed to be Ikki's new classmate and son of the Death Medarot's inventor Yuzuru, who blames the Death Medarots for his strained relationship with his father.
Intrigued by Metabee's power, Kokuryuu designs a new Death Medarot named Blackbeetle. Unlike other of her kinds, Blackbeetle is equipped with an experimental Medal that gives her a personality and emotions, though Kokuryuu treats her as just as disposable as his other creations. Eventually, he puts her medal into the extremely powerful and experimental model Grain, whose power requirements are far too much for her medal to handle. Ikki, Ginkai, Yuzuru and their medarots go to the Death Medarot Company HQ to rescue Blackbeetle and a fight ensues, which causes a destructive fire. The Medarots and Blackbeetle team up to rescue a trapped Kokuryuu. Touched by their actions, Kokuryuu renounces his ways and finally accepts Blackbeetle as his friend.