Heartwarming / Cubix: Robots for Everyone

  • When Cubix comes back to life after sacrificing himself to save the town from Dr. K's Humongous Mecha in the season one finale. Only someone with a hard heart couldn't get tears in the eyes seeing that.
http://tvtropes.org/pmwiki/pmwiki.php/Heartwarming/CubixRobotsForEveryone