Titan, Io, Ganymede, and Little Bang are aliens who come down to finish some business with Giga-Robo. However, Giga-Robo is not functional, and the earth air is making the aliens sick. They rely on Chibi-Robo to make everything right. These four aliens look remarkably like Chibi-Robo himself and speak so softly they cannot be heard (at first).
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