 SPOILER: The dog owned by Dr. Furoi is named "Flender" or "Friender"  (depending on the translator). In the original anime TV show,  Tetsuya had a dog named "Lucky" that was killed by robots and remade  into the mechanical dog "Flender" in episode 1. Serving as Tetsuyas  sidekick, Flender could turn into a number of vehicles including a  jet, a rocket, and even a subterranian drill. Director Kazuaki  Kiriya chose to leave this part out of the film.