King of Inventors, Garbagemon

Summary
While Yamato and Takeru are looking for food, Taichi and Koshiro soon reach a garbage dump where they encounter Gerbemon and Tyumon, who are salvaging the various trash for technology they can use, resulting in Gerbemon explaining that he is studying the land due to the black lightning from Millenniummon causing all that trash to appear and invites them to his lab for further analysis. However, they are attacked by a Raremon that had been hiding among the trash, but leaves when it gets hungry. Back at Gerbemon's lab, he reveals that if Raremon is affected by Millenniummon's black lightning, it could be bad, before then admitting how powerless he is as he looks over the cups that used to belong to his Tyumon helpers before they became energy for Raremon, vowing to avenge them.

They attack Raremon again, but when Gerbemon tries to use his Absolute Zero Bazooka on Raremon, Millenniummon's black lightning allows Raremon to digivolve into RareRaremon. When Gerbemon explains that RareRaremon has been eating mostly oil as of late, Koshiro gets an idea to use oil hardener with Gerbemon's bazooka and ice maker, along with help from MetalGreymon and MegaKabuterimon, to turn RareRaremon's body solid and immobile, and succeeds. Gerbemon is grateful afterwards, promising to continue his research over revenge, and Tyumon digivolves into Searchmon. As Gerbemon and Searchmon depart to look for their next research, Taichi and Koshiro head back to rejoin the other DigiDestined.